Oops! We couldn't understand your request

I finished editing my instruct-able and when i try to publish after changing the thumbnail it gives the error that is showed in the pic attached.  I have tried multiple times but its giving the same error. OS : Windows 10 Enterprise x64 Browser : Chrome Version 54.0.2840.99 m (64-bit) Have tried attaching the image here using the new and old uploader but it isnt attaching too :/ Here what the error message states Oops! We couldn't understand your request. Please contact us to tell us as much detail as possible about what you were trying to do when this happened

Posted by Diy Tech 1 year ago


How do you make Sanding Sealer / Grain Filler?

Hello there :) This is my first forum post so please be gentle ;) Okay, here's the skinny. I am doing a zakk wylde paint job on my stagg strat. I've removed all the paint and sanded it down. But I have some scratches on it (from the sanding) and a few places where I went in too deep with the sandpaper and removed some of the old sanding sealer. So, I need some sanding sealer / grain filler in order to make it a nice smooth surface so I can apply primer to it. Here's the problem. I live in a country where there is ABSOLUTELY NO DEMAND for sanding sealer / grain filler. So there is nothing like that in Bulgaria. And I need to know how I can make my own. (all of the carpenters here sand it and put on some lacquer and it's an awful finish but that's how it is here) Sooo, can any1 please help mee.... :) I really need something that is a good substitute of grain filler / sanding sealer.

Posted by tednet 10 years ago


signals for Model railways

I made the signal. I will show it soon.

Posted by paul Fast post 2 years ago


Publisher won't recognize keywords, so won't publish

No matter what I put in the "keywords" field, I get the "Please add keywords" error. Same using XP with Chrome, or Win10 and Edge. See attached screen capture.

Posted by DconBlueZ 2 years ago


Make use of iCamera 1000 units?

I have 3 "iCamera 1000" camera units laying around. I do not have the rest of the security system they are designed to function with, but there has to be some way to make use of them and have some fun. I have lots of cat 6 cable and RJ45 connectors to custom make a cable if anyone has the expertise to figure out how to make use of these. Before posting here, I searched and searched here and on Google but only found information regarding the "normal" application of these cameras..... I was hoping for something more outside the box which is why I am here. I included a front/back picture. Thanks for any ideas!!

Posted by PigWhistle 3 years ago


Soundproof Sleeping Closure

Hello fellow instructables :) Right I need some help and advice on a design brief to help fix my problem. Problem - I live in a ground floor flat and there is 1 flat above me, 2 scum bags occupy it, a couple of 22 year olds and they have obviously never been taught consideration for others and they bang and thrash around all through the early hours of the morning. When they bang on their bare wooden floor it sounds like a heavy metal dumbbell coming through my ceiling and it wakes me abruptly and its ruining my life :( I've complained to the council the past 18 months but there not interested. They have not put any carpet down in their flat in the last 18 months and it looks like they have no intention of doing so (they can afford fags n booze tho), plus they have a baby due any day now, great.. so now there making their problems, my problem. Solution - The only thing I can think of is making a soundproof sleeping closure, a large box like a 4 poster bed but all sides solid made out of a layer of MDF then insulation then more mdf, but I have some questions before I start. How would I get adequate air in and out ? Would this even stop the banging on my ceiling waking me up ? or would it still penetrate the box ? How would I control the temperature, would it be too hot in there ? Something like the image below but more solid with a door. If anyone has any experience with this or input or any good ideas I'd be ever so grateful. Cheers in advance. Matt

Posted by mattdiy 4 years ago


Iron Man's Repulsors

How would you build iron mans repulsors? I have some already...     You could use a transducer for particle displacement, you might be able to send an ion beam through a "tunnel" of a heavier particle, since it can't travel fast in air. I need ideas! Thanks, Laserbeamtoast.

Posted by Laserbeamtoast 5 years ago


Specific replacement wire to use for battery-pack?

Hi all,after finding an old etchingpen and opening it up to (see picture)needless to say i need to replace the coil-wire. is there a specific or special material to use here? i assume i can't just use any wire...i'm an electric-noob, so please be clear and don't use to much specific termonology - i probably won't understand! :PThnxz in adance

Posted by Brian M V 22 days ago


HHO generator with iron electrodes

Hello Everyone, I recently found out about Sodium Hydroxide as an electrolyte. I have read that it does not affect the electrodes like salt or baking soda and it does not create any weird gasses like chlorine. The main reason for using stainless steel electrodes is to prevent this corrosion, but since sodium hydroxide does not create this corrosion, can I just use the much cheaper iron or regular steel as the electrode plates? Thanks in advance  

Posted by JStuyfzand 3 years ago


How do I share a Preview of a Draft?

I would like to share a preview of a Draft that I am working on, but can't find a way to do that anymore.

Posted by KurtRoesener 1 year ago


5v to 12v convert

Hello, I want to connect a portable solar powered rechargeable to 2 DC fans of 12v to cool my car. 1. I have 2 options of portable solar powered: (A) 1500mAh, outputs: 5.5V / 800mA (B) 2000mAh, outputs: 5V 500mA     which one is preffered to connect to those PC fans? 2. most of the PC fans are working at 12v. I don't quite sure if I'll build simple 5v to 12v regulator it will works and produce enough airflow. Thanks.

Posted by ashakif 7 years ago


Staying motivated to complete a projects . . thoughts?

We've all been there, and I'm right there currently with a specific project:I was excited at first and started making this thing, and about midway through I've lost complete interest in the project and am struggling with motivation to finish it!For me, the contests here on Instructables were a great motivator with specific deadlines that always kept me motivated . . . but I work here now and cannot participate in them ; )When I lose interest in a project, it's often because the intriguing creative challenges have all been solved, but the project isn't yet completed. However I'm ready to move on to the next thing . . so the half-finished projects keep piling up. I've found that I'm far more interested in the active problem-solving process that "making" provides, than in actually producing completed things. It's an odd dilemma, and maybe I'm not alone in this. Do you experience this same mid-project disinterest? Aside from deadlines, what do you do to stay motivated to complete projects once the interest begins to dissipate?I'd love to hear my fellow Instructables authors' thoughts. Let's have a conversation!

Posted by seamster 21 days ago


Need help selecting a small motor for moving a small rig back and forth left-to-right only about 1 inch.

I have never worked with motors before, and I am starting to realize that there are dozens if not hundreds of different types of motors. Imagine two 6" long, 1/2" dia. aluminum rods suspended between two pieces or trapezoidal shaped plywood that are secured to a base and braced to make this whole structure rigid. on these two aluminum rods "rides" a small carriage that is literally just a small 2" x 2" platform made from... whatever... 1/4" plywood. This carriage can slide left and right on these two aluminum rods. I need a motor that can somehow move this little platform left and right, back and forth, only between 1/8" to 1". I need to be able to control the speed (rate) at which is travels this small distance.I also need to be able to control the starting point and the end (return) point. Basically, I and transferring string from one spool to another. So the platform will have a spool of thread on it, and it will be going left-to-right while another spool is turning. The left-to-right movement will be coordinated with the speed that the second spool is wrapping (turning) so that the thread windes as close to "perfectly" in layers. And each spool will be between 1/8 - 1/4 - up to 1" wide. This is why I need to be able to set the starting point, and the end point where it will stop and reverse direction. I will be controlling this with a project board like an Arduino. I just need to know what kind of motor to look for, and any other suggestionsThanks guys!

Posted by Dolmetscher007 4 weeks ago


Does anyone know a way to sense the temperature of perspex sheet?

I have a project in which I need to know the temperature of the perspex in a perspex sheet (so I can control aforesaid temperature). The Temperature sensors I know (TMP35-TO92) are okay for getting atmospheric temperature but no good for this.Has anyone a solution to the problem?Thanks

Posted by vagulus 21 days ago


The little guide to buying on Ebay

Like or not Ebay is now the number one online market place.Since they do their best to keep it that way a few tips might be of use to someone.Unlike some other guides this one is not about how to find the best bargain.It is about showing some things you should be aware of, especially if you are new Ebay.1. New, unused, refurbished....These three can literally mean anything if you find them in a listing title.Unless you read the full description you simply don't know.Assuming the listing goes along with the title.New should mean exacty that: Same condition as you would find in any retail store.Unused can be the same but could also mean it was opened, like to check it or take the pictures.Refurbished is something to take with caution.Unless it clearly states Manufacturer refurbished you just don't know if the refurbishing is done to specs.For a phone it could mean a badly glued screen, a no name battery, non matching serial numbers...Unless an item is factory sealed you should expect detailed pictures.In a lot of categories you will only find generic pictures though - buyer beware!2. Warranties....Ebay does have a buyer protection but Ebay does not deal with Manufacturer warranties in any way!In some countries a seller is legally required to provide a warranty and return statement.Sadly that is not the case in all countries Ebay serves.When it comes to brand new devices you might experience problems with your warranty.As more and more companies go against online selling platforms they do not support they simply exclude them from a warranty.Let me give you an example for this one:You see your favourite smartphone at your local retailer for the bargain of just under $1600, while on Ebay you find the exact same model for $1200.Easy choice? Depends...If the manufacturer does not support this then only the seller can provide you with some sort or warranty.The good one claim to do so but don't expcet this from someone only selling a handful of items per year.In the worst case it could mean your new gadget develops a fault over time that would be fully covered by a manufacturer warranty but you would totally miss out.The money is gone and you have to fix it at your own cost.If the item in question is also of value then please check the warraty and return conditions the manufacturer allows before buying.4. Pricing....Especially when it comes to things that somehow could be bundled or used with something else you can get screwed.The culprit i question is the multi-item-listing.You might look for a battery pack to keep your phone charged when on long hiking trips.But the first 50 or so listings are all in the lowest imaginable price range.The listing title shows what you are looking for, the image does too....Then you dare to check and it is a listing where you can select multipl items.The price shown in the search result is only for the lowest crap listed there, like a "waterproof usb plug"....The actual thing you need is usually overpriced.You are forced to either ignore suspiciously low priced listings or check them all to compare prices.5. Postage costs....A lot of things these days come with free shipping, all good.If they don't then again: Buyer beware!Sometimes there are exclusions, like certain post code areas.Or the free shipping is not for international customers.If it is clear you have to pay shipping and you buy only a single item then again the case is quite obvious.Combined shipping however does not always mean single costs!Check the psotage options for multi items carefully!Often additionalitems are free if they are small.But if a seller already charges you a high postage fee than chance are you pay the exact same price again for the second - even if the arrive in a single $2 prepaid envelope.6. Faked locations....It seems to be common with Chinese sellers to avoid import taxes by faking a local item a selling address.In some cases (often after Ebay got too many buyer complaints) they list the real shipping time of 2-3 weeks.More often however they don't.Once you have the problem the best option is to open a "item not received" claim 3 days after it was due.On the due date contact the seller and ask when to expect it.There is a way to spot these fakes and tax frauds:If a local seller, with a locally listed item gives you a Chinese Paypal account with an address in China than you got a fraudster.Problem is that once you committed to buying and can see the sellers account details it is already too late.To cancel such a transaction you need to do it the official way and if the seller won't agree then don't expect Ebay to accept that you don't want to suppport tax evasion and fraud.Either way, I report each and every single one seller showing a local item with a local selling addrees but using a Chinese Paypal account.7. Fraudulent listings and sellers....Let me give you a slightly overstated example on what I mean:Seller has only sold a very few items, usually of low value.Suddenly you spot y nice and this years model laptop at a bargain price.You check the listing closer and find just 2 or 3 pics.Further down you read something along the lines "Unwanted gift, comes with car charger only."If it is this years model then it is still under warranty and no one would lose all the additional hardware like the wall charger. ;)Again it is up to the buyer to decide....Ebay does not check where an item comes from or if the seller is the legitimate owner of it.8. Exclusions to make...Be it price, auction only, distance and so on.You can make certain limitation and selections to narrow your search results.Some make sense and work, like just showing items to auction.Distance no longer really works as sellers are no longer required to state a town or post(zip) code anymore.Price is relative too.If you know the ting you need definately costs between $100 and $130 then the search still won't filer anything out that is a multi item listing and within the price range.And in some cases it just totally fails.A very vital exclusion was removed around 2014: by country.Now all that is left is to limit to all within your home country.You can't select for example Japan only if you are located in Europe and would like to avoid the rediculous postage costs from the US.And you could not exclude China either...All or local is what you can play with.For the rest that is available: use it whenever it make sense and is possible.9. You buy it - your problem!No I don't mean faulty items or wrong ones.I mean simple things that can happen to anyone distracted, unconcentrated or too full of exitement.You buy something and think you are the happiest guy in the world until you double check the listing to confirm your luck.Missed the over $300 in postage ocsts?Did not see further down that it states "replica" or "scale model"?Or hints that the massive sized Opal in fact is just a resin with a thin and cheap layer of Opal flakes on a black background?As said, your problem alone.I know a lot of people who started having fun on Ebay until they got their gib bargain surprice - one way or the other.Don't become one of them and read and check listing you might want to buy with great care!10. Feedback...You might have noticed that it is next to impossible to find a seller with a feedback rating below 90%.The reason is quite simple: The lower your ratings as a seller the further down the search results you appear.And of course you don't make any business anymore once so low...But feedback you leave is as important as feedback you get!So if you spot a deal where the seller has a rating below the magic 99.5% positive rating you should check his feedback.Quite often it is clear that some angry customer left it.Most obvious if the seller left a reply stating otherwise.But in some case you more than one buyer left a negative feedback for the same reason as other buyers - this is where you should be careful.The reason to actually check the feedback is quite simple: It is heavily manipulated by Ebay.A seller won't get and negative feedback if he agreed to replace the item in question or if he offers a refund.Same for simply stating that a negative feedback was not justified.The later can be anything from the words used to just wanting a clean sleeve.And if a seller is highly active than business rules and the feedback is corrected by Ebay.You might have noticed that for some sellers now now new negative feedback show up that would be of any real concern for a potential buyer...11. Retractions :(Be it a seller not wanting to sell something that auctioned off below his expectations or a buyer who simply failed to pay attention to the price and all details : A retraction is possible.If you try a lot of auctions you might have had the "second chance offer".After you lost an auction you might get notified that the winning bid was retracted and that you are next in line.In almost all cases your last bid will be accepted but some sellers offer you the item for what the rectracted bid was - so pay attention to details!Now you might think that if happens so often you could make good use of it.Like for example participating in several autions to try to win the device one way or the other.Set some sutomatic bids and go to bed.If lucky you got one, if too lucky you won all auctions.Retracting your bid on those you now no longer need is possible but I strongly advise against it!Firstly you can negative feedback from the seller for it and secondly Ebay will keep you under watch if it happens too often.An honest mistake and all is fine but ask for a retraction a few times a month and you will have a hard time on Ebay.In the worst case Ebay can even suspend your account or exclude you from auctions.So, is it still worth signing up and trying to find a bargain?IMHO it all depends on WHAT you are looking for.Someone in a remote area of Brazil will certainly value it differently than someone living downtown L.A. with access to all sorts of shops, retailers and outlets onevery corner.Same for spare parts, electronic parts or stuff that is made in China anyways.But times have changed for sure.What started free for everyone became a paid platform for those who sell.Later those buying also had to pay extra as still all transactions come with fees on the side of Paypal.Not much to be fair but still...And from a platform with a few scammers and frudsters that always got and kept your money we came to something flooded by sellers that should not even be allowed to have a Paypal account.The buyer protection helps in some way but it can take weeks to get your money back and if it something expensive than this money makes interest for someone else while you don't have to buy what you wanted to buy.While, in a real shop you just go back and return your item to get your money back - plus you get a real warranty.Do your homework and be aware of what could go wrong.If it looks like it could go wrong somewhere than you might want to consider a deffierent option for this item.

Posted by Downunder35m 26 days ago


Contest FAQ (Frequently Asked Questions)

Here at Instructables we run a ton of contests! We also get asked a ton of questions about those contests. Below is a list of the contest questions we get asked most frequently and also some questions that we feel could use a little more explaining. (Let’s be honest - reading the official rules is not fun.)Please ask addition questions in this forum topic - I'm sure there are some we have not covered!Important links:List of upcoming contestsContest suggestionsPrize suggestions General Contest Questions How do you choose which contests to run? We do this in a few different ways.Contests are planned based on past contest themes, what’s trending in search, which categories/channels need a little love, new site features or if there’s a certain type of content we want. Contest ideas also come from staff meetings and through the official contest idea forum topic.I have an idea for a contest! How do I tell you guys?Please post here and let us know! We can’t run all of them, but we love seeing the ideas you guys come up with. How do I win a contest?Post something awesome! Check out this collection of tutorials that will tell you how to write a great instructable. Why do Instructables employees enter the contests?We enter contests to set the bar and give an example of the type of entries we want in the contests. We're not able to win them, though!It's important to note that several employees were authors on the site before they worked here, though, so you might see some wins in our achievements! :) Entering Contests Can I enter if my country is not listed in the official rules?Yes! You can definitely enter.However, you must have a mailing address in an eligible country to win. If you have a friend in the US or another eligible country that can receive your prize, go ahead and enter!You can read more about our progress to add more countries to the eligible shipping locations here. I live in -----, why can't I enter?!Chances are your country has incredibly strict laws regarding gambling, sweepstakes and contests. We try our best to play by the rules, and if we can't meet the minimum requirements to run a contest in your country, we don't run them there!That's the easy answer. The hard answer is that it's very complicated and involves lots of risk and scary legal language. Why isn't my entry showing up in the contest? I entered three minutes ago!Real humans look at each entry! This means it take take a while sometimes. We work standard office hours, 9-5ish PST. We tend to moderate first thing in the morning, Monday-Friday.If you enter at the end of the work day or over the weekend, you may have to wait until the next business day to be accepted. Why can I only enter one contest with one Instructable?It’s all the spirit of fairness. In the past, we've had popular instructables sweep multiple contests with huge wins. This new rule will allow more authors to win! Why was I rejected from the contest?The number one reason for this is not fitting the contest theme - we try our best to explain the sorts of entries we’re looking for on the main page of each contest, so double check your eligibility there.We also sometimes make mistakes or encounter bugs during the approval/denial process. (Checking the wrong box, clicking the wrong button, breaking the back end of the site) It’s rare, but it happens! We’re human and can’t help it, but we do our best to right those mistakes as soon as we know they happened! Why can’t I enter an instructable I published before the start date into the contest?We want to see NEW and exciting content built just for the contest. If we allowed old instructables in, we’d just see the same things over and over again. Plus, the number entries in the contests would make it very hard to choose finalists and winners.Keep in mind that simply republishing an old project will not make it eligible - we check for that. ;) Can I edit my Instructable after it's entered in a contest?Short answer: YES!Long answer: You can make any modifications you want to an Instructable that's already entered! We get so many entries that there's absolutely no way we'd be able to police it even if we wanted to - but it's never something we want to discourage.Improvement is always a good thing as far as I'm concerned. :)However, we must caution you: it's best to get those changes done before voting closes. The voting period matters the most because that's the time that we start looking into picking finalists.Another slightly related caveat: don't publish a mostly empty instructable and try to fill it after the contest ends. We're starting to see this happen more often, always with a promise that updates are coming. You can never tell when we'll be reviewing it as a possible finalist, so chances are you'll get overlooked going about it that way. We are currently looking at 50-300 entries per contest, so anything incomplete doesn't stand a chance these days! Finalist & Winner Selection When are the finalists selected?Finalists are selected starting the Tuesday after the contest closes. The finalist selection process normally ends Thursday of the same week, depending on how tricky the contest is and how many people give input. How are finalists selected?Finalist selection is a mixture of votes and staff choices. We look for all kinds of things when it comes to picking finalists, including: Good photos! Pretty photos put you five steps ahead of all the other entries already, honestly. We're going to want to click through and look at it as soon as we see it if it's pretty! Good explanation of both WHAT the project is and HOW you made it. Sometimes it can be really hard to figure out what we're looking at. (Personally, if I have to spend several minutes staring at photos and reading to understand it, I'm not very excited about it anymore.) Try to convey the project through both photos and video if it's needed. For example - if it's a rocket, upload a video of it in action! A good story! I read more projects than you could ever imagine every month. I love it when an author takes time to explain why they made the project, or documents the errors they made along the way. That makes an instructable so much more enjoyable to read. :) Citing your sources/inspirations - look, we realize there's hardly an original idea on the internets anymore, so we can't fault you for that. But it's only fair to give credit where credit is due. We like that. Plus, it sometimes makes for an awesome story. Creativity! Look, I cannot even begin to tell you how many paracord bracelets, Altoid tin survival kits and Iron Man arc reactors I have looked at. My eyes glaze at the thought. Don't just go for the common and easy, take that project and put a new spin on it!!Relation to prize. In some contests, we offer a Judges Prize. Entries that qualify for this prize are also taken into consideration. We always suggest authors read their own work with an objective eye. Does it make sense if you aren’t familiar with the subject already? Did you provide enough description? Are the photos understandable? How many finalists are there?To find this out easily, go to the contest page and look at the total number of prizes to be awarded. The number of finalists for a given contest will match the number of total prizes. Why wasn't my project chosen as a winner/finalist?This can happen for all kinds of reasons, honestly. See the "How are finalists selected?" question above for a more in depth explanation of what we're looking for.The most important thing to stress is that we are going through TONS of entries for every contest, so it's important to set yourself apart. Choose a clear and concise title, tell us a story, share great photos, explain the project well. If there are projects similar to yours in the contest already, make sure your project exceeds theirs in awesomeness. Also remember that competition is fierce in the contests - there are always a LOT of amazing entries. When it comes down to selecting winners sometimes it's the little things because when you're comparing awesome to awesome the little things are all you can look at. So be detailed orientated when writing your instructable. Judging Who judges the contests?This is typically a mix of Instructables staff and authors on the site (your peers!). Each contest is normally assigned 10-50 judges.Lately we’ve had an average of 15-20 judges complete the process. I always try to add as many judges as possible, because more judges means the judging is more fair and helps to reduce bias. How can I help judge a contest?If you’re interested in helping us judge, check out this forum topic! To judge, you must have published at least one Instructable.We send out PMs to judges on the Friday after a contest closes. How do I judge a contest/access the judging ballot?We’ve written up an Instructable over it! You can find it here: https://www.instructables.com/id/How-to-Judge-a-C...Once you're added to the list of judges, you’ll be able to access the ballot. Prizes How do you pick prizes? Can I suggest prizes?We've got a pretty small budget prize here, so it's a mix of trying to be frugal but still give you guys something fancy. We try to order most of our prizes from Amazon.com because they have reliable shipping and tons of options.If you'd like to suggest an awesome prize, do it here! I don't like these prizes, can I trade?Short answer: nope!Long answer: we choose prizes well ahead of time and order prizes at the start of the contest (for 95% of what we run) and we don’t make substitutions. We typically have anywhere from 100-250 winners a month (and increasing all the time!), so it’s not feasible to give choices and sub things out. Only three of us on staff work with ordering the prizes and shipping them out, so that would be lots of work!However, we have allowed winners to switch prizes with another winner on occasion (both parties must agree and let us know before we ship them!) and we’re fine with you selling your prize somewhere else. How do I get my prize if I win?When contest winners are announced, we’ll send you a message with a form to fill out. Make sure to fill this out completely and remember that we require a phone number and that we can’t ship to P.O. boxes.Winners are responsible for any trade tax or tariffs incurred for shipping to your location. We cannot reduce the value of the prize so you pay less tax (nice try, though, you sneaky hobbit!!). When will my prize ship?We try to ship prizes as soon as possible! 75% of our contests have prizes that are easily shipped right away and you should receive notification of shipment within a week or so.Sometimes we do have to order items AFTER the contest ends or wait for a sponsor to ship the items. If we think there will be a delay, we’ll let the winners know. We’ve been trying very hard to make sure we’re reaching out and updating winners about prize statuses.Also: VERY IMPORTANT - the sooner all winners give us their contact info, the sooner we can make big orders of custom sizes. Sometimes there’s a huge delay just because we’ve got one straggler. Be a good winner and let us give you prizes, dangit!!

Posted by jessyratfink 4 years ago


List of Upcoming Contests (updated 11/7/18)

Hello everyone! Below is a partial list of the 2018 contest calendar. Keep in mind that this list is subject to change and contests will continue to be added throughout the year. The contests below are already in planning, and I've left off ones that we're still trying to decide on. The months indicate when the contests will be launching. All contests will launch near the beginning of each month. Keep in mind that the list below is not set in stone. We always find fancy new companies to supply prizes so dates are subject to change!OctoberOptics ContestThis includes any project using lenses, prisms, filters or other tools for shaping light. Plastics ContestAll plastic, all the time.Side Dishes ChallengeWow us with your best side dish recipes!Electronics Tips and Tricks ChallengeShow us your best electronics tips and skills for your chance to win an oscilloscope!NovemberPuzzle ChallengeAll things puzzle related (with a special Tinkercad judges prize!). First Time Author ContestA contest specifically for all of the first time authors!Big and Small ContestBuild scale models that are either bigger or smaller than the original item. Make it Glow! ContestBack by popular demand, a contest dedicated to all things that illuminate and glow.DecemberBaking ChallengePrepare yourself for the great Instructables bake off!Holiday Decor ChallengeWow us with your best and most exciting holiday decor ideas.Toys ChallengeThis quick challenge is open to all homemade toys and toy mods.PCB ContestAny project that incorporates a custom designed PCB is eligible to win.JanuaryWarm and Fuzzy ContestThe warm and fuzzy contest is open to all cold weather sewing and knitting projects. *All contests subject to change. Please leave suggestions for prizes here. You can also leave suggestions about contests here. Have a contest question? Check the Contest FAQ!

Posted by randofo 5 years ago


Removing Broken Pin from an RCA Jack

I recieved a free, working TV the other day. The only problem with it was the pin from an RCA video cable had broken off inside the socket. I didn't want to spend money on an RF modulator for my DVD Player, so I figured out a pretty solid way of getting the pin out. 1.) Find a needle 2.) On a hard surface, bend the very tip of the needle slightly so that it forms a tiny barb. 3.) heat the tip of the needle with a lighter until it glows red hot. 4.) stick the needle into the plastic core of the broken RCA pin 5.) wait a few seconds for it to cool 6.) pull the needle out, and the broken tip should follow!

Posted by spenjmn 11 years ago


Converting a Radio Flyer Classic Trike to an e-Trike

Hi. I've been looking at the Radio Flyer Classic trike for kids and realise it would be the ideal project to convert into an e-trike . Would welcome recommendations and best practice to do this . Component -wise , most important to consider ( slimline battery shape , throttle ( reverse feature) , fixed drive shaft ), front fixed foot holder. This would be my first project on Instructables and would love to document and share based on best feedback options adopted . Thanks!

Posted by greenwichmytime 23 days ago


Removing hair dryer heating element

Request for help:  Does anyone know how to remove the heating element from a hair dryer to have it only blow cold/cool air?  I've opened it up and there are a lot more wires than I expected.  I have just enough electrical knowledge to be a little bit above dangerous, so I thought it would be best to ask for help.  Thanks!

Posted by WaffleM 6 years ago


where to get Strike anywhere matches

Their are tons of instructables with strike any where matches, but i dont have any!!! and i cant find a store that sells them! iv tried a hobby store which mostly sells boyscout/ camping stuff they have water proof matches but not strike any were matches iv tried sporting good stores with a second level devoted to camping fishing and hunting but they still dont sell strike any where matches. so-dose any one know where to get strike any where matches in the US

Posted by i make shooting things 11 years ago


What can be the problem with this circuit?

I built this Opto Sensitive Dimmer's dimmer part first just one led the Orange is light. but can be the problem? I built this on a test board so sorry for the soldering.

Posted by bothbence62 24 days ago


Recommendations for lipo cutoff device

I've been looking for a device similar to a battery alarm for 4s lipos that can cut off the power when any one of the cells drops below a certain voltage instead of just sounding an alarm, i've been told that i can get a bms circuit which should be able to do this and that i should try to find the best one i can but i don't really know exactly what to search for. can someone recommend a small and affordable bms please? i won't be charging through it as i have a separate balance charger, i want it purely as a cut off device for when the batteries are in use...

Posted by ambientvoid 25 days ago


Microsoft Photodraw - does anyone use it any more?

I have Photodraw 2000 on my computer from several years ago - I copied it onto my newer computer and I use it all the time to add text, borders or effects and to correct old photos or erase backgrounds.  I use my photos for various purposes, for teaching and family use, so it's good to be able to do lots of things with the photos in just one simple program I love Photodraw- it has so many uses and is easy to use. I never got the hang of using layers as in paint.net (which I've tried ) and Photoshop (which seems so expensive and complex). Does anyone else still use Photodraw or am I hanging on to a dinosaur here?

Posted by Puzzledd 7 years ago


How do you make your own cream of coconut?

Hey all! I live in provincial France, where it is virtually impossible to find Coco Lopez for piña coladas and other uses. I've tried several times to concoct my own, using sugar/corn syrup/other sweetener in combination with coconut milk, creamed coconut, and processed fresh coconut, but I am not getting satisfactory results. I can usually tweak the mixed piña to make it acceptable if it is drunk right away, but now I'm faced with the need to get my hands on some cream of coconut for a coconut cake recipe I'd like to try out. IMPORTANT:  I need to know how to make the equivalent of Coco Lopez, which is "cream of coconut" and is not the same as coconut cream or creamed coconut. If anyone knows the secret, please share! Even for people who can buy Coco Lopez whenever they want, it would be fun to have a DIY version of this tasty product using fresh (or at least, not so highly processed) ingredients with no weird additives. Thanks.

Posted by CherryPie 8 years ago


Adding USB storage to Bluetooth device?

Hey diyers, I am looking for info. I recently picked up a mini Bluetooth keyboard/mouse combo. I got it for retro gaming. I was wondering if it were possible to add USB storage inside the keyboard and transmit the data via Bluetooth. Thinking I could use it to store save files so I have them no matter what PC I play on

Posted by turnafraze 25 days ago


Ever heard of Ceramicrete, MgO cement, Magnesium cement

Has anyone ever worked with MgO cement?  Where can buy it in US? MgO replaces the Ca found in portland cement. MgO cement makes a concrete that will incorporate cellulose and other organics into the crystalline structure. absorbs CO2 instead of generating it, is an order of magnitude stronger than portland, does not require wetting, and cures in minutes. So basically, you can take some burlap or old blanket and paint this stuff on, then fill the void with straw and cement and make super strong, light and thin structures. I have looked for it locally but it does not seem to be available to consumers in the US, probably because of the lack of sheep crap which is the typical source of Mg. It is amazing stuff. This is pretty much the only article I could find about the stuff: http://greenhomebuilding.com/articles/ceramicrete.htm

Posted by bsims1 5 years ago


Very Frustrated - Instructable Won't Publish!?!

Okay, so I'm a professor and I have a nice project to publish.  For a first time user of this site, I'm thoroughly frustrated with the lack of detailed feedback when something is wrong.  I would fix it if it would tell me.  Usually I just walk away thinking that the thing is simply not worth the time, but the reputation of this site gives me repose to try to find out why. My instructable was saved and shows up in my drafts.  Great. I hit publish and it goes to a page to request keywords and category.  Great. I put a minimum of 2 keywords and select a category.  Great. I press "yes, publish my instructable" and the page refreshes, clearing everything I've entered. After doing this ten times with no other results or feedback of what the problem is, I find myself writing this topic in hopes somebody knows why.  Whatever the answer is to this dilemma, its kind of ironic that the instructable site is so lacking in basic feedback when there is a problem.. Oh well, I hope you understand my frustration.

Posted by Pr0f Most 5 years ago


what paintball gun do you have

What paintball gun do you have?

Posted by nerfer192 10 years ago


coverting 24volt rechargeable lawn mower to use direct AC wired connection.

I am not able to start a gas mower and so I utilize a very old electric mower. A friend gave me a black n decker rechargeable 24 volt lawn mower, no "key" and no charger.  I was pondering putting an AC/DC power converter on the mower body and then using an extension cord to power mower. But concerned about running motor direct from converter. I would of course by pass the battery pack and go direct to motor because there are always warnings about not running an appliance while charging. So thinking along these line took cover off motor body and off the wiring in the handle.  Upon inspection except for the wires going to the batteries from the motor, the motor itself looks like the electric motor in my old direct electric lawn mower! My question is: Would it be possible to directly wire AC power to the motor of this DC powered motor? I am not an electrician but understand some basic principles. After reviewing specs on B & D's webs site know that there is some type of inverter built into the battery pack. I'm assuming it is to convert AC to DC for charging them. Could I wire directly to it then to motor and not use the batteries? I survive on a very low fixed income and can not afford to buy a replacement charger and needed "key" (connects wires to make it run). I do have wire and soldier and a desire to make it work. Any advise would truly be welcomed.  Otherwise I will proceed with my inkling of an idea and tell you how it goes or not! thank you.

Posted by nitajayne 5 years ago


Very old and New topics getting mixed up

We are still getting very old topics (questions) and the newer ones mixed together.

Posted by rickharris 4 weeks ago


Vertical Axis Wind Turbine - What is the best airfoil?

I've always been interested in windmills. The vertical axis wind turbine (VAWT) seem really cool. I discovered there is a company that (under contract) assembles them right here in my state of Michigan. So, on our summer vacation last year I diverted the family unit over to the assembly plant to see what's new, and exciting. Well, guess what, the plant is closed on weekend. Who knew. Well, for one, Momma thought I should have. Oh well, we got to see their demo unit Windspire up close anyway. It was just whipping. Anyway, to my question, if I wanted to build a really efficient VAWT, what would be the best shape for the airfoil? I've attached an old patent I found that has a drawing (Patent 4247252). I copied the drawing into Inkscape and redrew the airfoil using bezel curves. But, is this the best shape to start with? I'm hoping some aeronautical engineer out there can comment. Thanks, Jim

Posted by jimk3038 8 years ago


"dry box" for drying clothes in humid weather

Hi all,I'm thinking of building something helping me to dry my laundry in the amazingly wet weather that I'm getting in the place I live now.I searched instructables for a while, but did not find anything that really applies. This might be due to the fact that I'm both new to instructables, and not a native English speaker. I might be using the wrong keywords.So I live in a very humid and foggy place, and it's winter now. When I hang my clothes out to dry, the process takes ages. Sometimes I think it might be working backwards: the clothes become wetter. Also, an unpleasant byproduct is that my clothes become smelly, despite they are clean. Sometimes, as a last resort, I hang my clothes inside the house. But my house is very small, and I do not really have a place for the clothes hanger. Plus, the house gets very humid and I am afraid I'm going to get mold. On the other hand, I have a rather large balcony, with a lot of place for the clothes hanger.Of course I could buy a clothes dryer. I actually use a coin-operated one for large items, such as bed sheets and large towels. But I'd rather not use a tumble dryer for my clothes.However I recently learned about heat recovery ventilation for houses, and I started wondering whether the same concept could be used to build a small-ish enclosure (a box) where air is kept warmer and dyer than outside, possibily in a controlled manner. Also, it would be very nice to get energy from the sun. Surely the walls of this box could be transparent, or black, to create some kind of greenhouse effect. Then I need a fan, to have the air circulating. The air could go through a heat recovery unit. This could probably solar-powered. On the other hand, I am not sure that solar panels would be helpful for heating the inside of the box by night (energy should be of course stored, but I do not think that would be enough).I see that something similar to what I'm thinking about is already on sale e.g. on amazon. These are called "portable clothes dryers", but they do not seem really optimized. They look like a combination of a hair dryer, a clothes rack and a tent. I do not think there is a real heat exchanger, or humidity control...Plus, they do not seem really safe, especially if operated outdoors.Can someone give me some advice, e.g. pointing me to projects that use similar ideas possibly for different purposes?Thanks a lotFrancesco

Posted by pieffebi 4 weeks ago


Rugged external pull up/down resistor connection

How do you people install a pull up/down resistor in a very stable rugged way.I want to hook up a pull up resistor to a sensor but I only have a cheap color coded resistor and if I solder it would be a messy hack and not a rugged long term solution. Of course I would like to buy a rugged solution, but I hit a wall with google, maybe my keywords aren't right. But I am pretty sure i am not the only one with this issue.Rufus MapQuest UpToDate

Posted by cjmaverickforever 4 weeks ago


Programación de Modulo De UltraSonido

En esta prueba de la programación del Modulo de Ultra sonido hubieron varios inconvenientes al al principio, por ejemplo al programarlo por 1ra vez y al colocarlo en el suelo el robot no detectaba los objetos que se aproximaban a el, creímos que tal vez faltaba calibrarlo.Al programarlo por 2da ocasión el robot ya detectaba los objetos, el problema era que no daba la vuelta, simplemente se quedaba estático, creíamos que fue porque la batería estaba descargada. Al pasar 20 - 25 minutos tal vez el problema era que se necesitaba aumentar la velocidad del coche. Eran simples errores, esperemos que al hacer esto y les pasen los mismos errores que a nosotros,

Posted by ReneSantana 4 weeks ago


Tempered glass screen protectors - understand and beware!

I recently had the joy of needing a new screen protector for my mobile after being dumb enough to drop it on gravel. The hard cover took all the impact but the film protector on the screen was scratched badly. Was old and partially worn anyway so I decided to upgrade to a Tempered Glass screen protector. Being somewhere rural I had no chance to get one in a shop so I ordered online. With no intention of advertising for some sellers, I collected a few links so you can check what I am talking about: Item1 Item2 Item3 Item4 Item5 Item6 So, what is my concern with these? They all can be found on amazon and other online services as well as on local markets... As I said I ordered a glass screen protector. If you check these listings and even some of the packing you will notice they all have a thing in common - being shatter proof and of 9H hardness. I also love this video showing how to remove and fix a glass screen protector! The last time I checked glass had one very distinct feature: It is hard and before it really bends it breaks - unless you use fibre optics of fibre glass cloth... What is my concern and warning here? Pretty simple: Stay away from expensive scams! Some claim their screen protector is only 0.25mm thick, even the 0.2mm one I measured was over 0.5mm with the glue... The hardness of 9H refers to the so called Moh's hardness - look it up on Wikipedia if you like. That means these tempered glass protectors would have a similr hardness than a diamond, or at least close to it. Problem is that they are made from plastic to start with and not glass at all. They claims that the screen protector is flexible because it is so thin - again a fake! Even the thinnest tempered glass will shatter if you bend it enough, not so these plastic ones. If you think I am making all this up try to use a really sharp knife or deburring tool and cut the thin sides of one of these protectors. All the ones I tested could be cut quite easy - and I though glass can't be cut with a kinfe... A nice website showing that the scratch resistance is far from the claims can be found here. And a video showing how a real glass screen protector sounds and breaks can be found here. So is it really all bad and should I avoid getting one? Not really if it is only for the added protection. To be clear here, and without the intention to blame any of the above sellers, some protectors actually do have a top layer made from glass and you can hear it as in the above video - it sound solid and not like plastic if you tap it with something hard. Another factor is the simple fact that plastic absorbs impact much better than glass. So where a real glass screen protector might shatter and crack like in the above video, the fake ones might one get a nasty dint or scratch. But you should be aware and clear about what you get and what to expect from it. These glass imitations are made from a strong polycarbonate plastic, similar to the stuff used for bullet and explosion proof "glas" windows - if you every watched the Mythbusters you have seen the big sheets I mean. The top layer of these things is specially treated to repell water, oil and dirt, it also gives the surface the good scratch resistance. The technique is nothing new, camera lenses, plastic sheets and the clear covers you see over the timetable at your bus stop all use it. The new thing is to intentionally mislable a product to make the consumer think it is glass ;) What is the real difference for the user? Check this video. Here a guy performs a drop test with a real glass screen protector. Thing is once the protector breaks the screen itself is broken too but until then it was not too bad. Here it is demonstrated how a real glass screen protector reacts to certain types of abuse - one of the reason I decided on glass. Compared to the plastic counterfeits just the sound on the glass is worth it, but I think the hacksaw was best. Another video from XDA gives a bit more info on how the glass is made - if you can't seeing a phone being abused then don't watch the drop tests at the end ;) Glass with these hardness levels and types of surface protection will give the user a long and worry free use of the phone. The plastic fakes will perform at a similar level for some time but will show signs of wear long before even the top coat of the glass one fails. Both types have their uses and if the fakes would be labeled correctly the user would actually benefit from that. On bigger screens like a tablet I would actually prefer the plastic ones to prevent damage once it needs replacing. On a mobile used in less than perfect conditions I would also go for plastic as it usually is a bit thinner and will fit better within quality hard covers. But when it comes to real abuse like using with dirty fingers most of the time or mostly outdoors where a lot of dust and fine sand can be involved I always go for glass. If you paid attention to the surface treatment then you already realised that the plastic and the glass are in the same region, making them quite scratch resistant. Still fine sand or metal dust will scratch it.... The difference is in the hardness of the actual material that was covered with the oleophobic film. Glass will not give in any way, where plastic is much softer - so not to be confused with the surface hardness! This mean that sharp and point object will easier penetrate the plastic than the glass, something to be considered if you often ecounter harsh use. In terms of actual protection we need to differenciate between surface quality and actual screen damage. After all when badly scratched we can replace the protector but if the display got damaged we are back to square one. The surface hardness was already covered so let's move on to the screen itself. In some of the above videos you can see the abuse a screen might see in normal conditions, and if we would not drop our phones so often repair shops would not be at every corner LOL I have done quite a few screen repairs, mostly for friends and work mates that did not want to pay the hefty extras in a repair shop. From there I got the stories on how it happened and in almost all cases the screen cracked when the phone landed on the corners. In one case the screen and glass protector failed, including the actual display when the phone was dropped out of a 4WD and landed screen first onto a rock. A glass protector will spread the (direct onto the face) impact force onto a much larger area, where a plastic one will produce a dint onto the actual screen much sooner. So again glass wins in terms of actually protecting your expensive screen. But be aware that all this is useless if the phone lands on the corners!! Let me explain: Both the top glass on your screen and the screen protector have a thin layer of "glue". This acts like a shock absorber, so unless an impact goes deep enough so the pressure on the actual screen is too much only the protector should fail. But the screen itself is a tight fit into the frame of the phone, so all side and corner impacts go directly into the glass. As the rest of the glass has no way to give or go the stresses will crack the screen. How should I treat my phone with the new screen protector? Exactly the same way you would without it of course. But if you don't have a proper cover that offers protection of the corners you should invest in one. Having a quality protector and a good case does not mean your phone can be used as a football, see it as an added insurance in case something does go wrong. For obvious reason it can also pay off to have a spare at hand, if something bad happens that requires replacement of the protector you won't be left with an unprotected screen ;) Last but not least, double it up: For people that already know their screen will see a fair bit of abuse in term of scratches it is a good idea to put an extra film protector onto the glass one. Once it is too scratched you peel it off and replace it, while the glass protector gives you the actual protection for your screen. Corning Willow glass As time of wrinting Corning Willow glass is the only "flexible" glass on the market, unless stated with your flexible screen protector you can assume it will be just plastic. I did not list it above as this high tech material is mainly reserved for displays and at least to my knowledge is not available for screen protectors, although I will stand corrected as I have to assume some big players use it for their protectors. The material is actually a sandwich where an ultra thin sheet of glass stis bewteen two layers of durable coating, read it up on their website it is quite interesting. It won't reach the strength of their famous Gorilla glass so without an outer plastic that has the additional oleophobic coating it won't provide the strenght of real tempered glass protectors. Some phones like the Galaxy Round and the fleixble HTC phones use it for example.

Posted by Downunder35m 2 years ago


"Most Popular" ... ?

I was curious how the "Most Popular" section on the front page works, it's great and shows some wonderful Instructables, but I'm curious as to how an Instructable with just 67 views gets #1 on the list. Is it views / time? Comments / time? Thanks!

Posted by Kryptonite 7 years ago


How much angle or curve needed for bike trailer tow-bar?

I want to make a trailer for my bike, but am confused about all the various types/styles of D.I.Y. tow-bars I see being made/used...how does the curve/bend of the tow-bar affect whether the trailer will track correctly behind the bike? If the trailer does not track correctly behind the bike then the tires will be ruined over time, and it will cause more 'drag' (harder to pull). I understand that the tow-bar needs to be able to clear the bike's back tire when turning, but if I put the wrong angle or curve in the tow-bar will it cause issues with keeping the trailer straight behind the bike and tracking properly?So how does someone determine the correct angle/curve of the tow-bar, besides trial and error and possibly wasted materials? Thank you for your time and assistance.

Posted by Bsrlin 4 weeks ago


PWM to MPPT solar Charge Controller

I have an Hybrid Solar Inverter with 50A PWM solar charge controller inbuilt into it. It works on 24V battery bank. I am having 800Watt of PV module installed in the system. As my inverter is having PWM charge controller, I am not able to harvest maximum of power from panels. I want to know that, is there any arrangement or device which can be put in between PV panel and my Inverter which can increase efficiency or can act as PWM to MPPT converter for my Inverter? My Solar Pannels generates often 39V but I couldnt utilize the surplus power as it stepped down to 24 Volt.

Posted by Shashi BhushanS 3 years ago


What is the most affordable laser cutter for a beginner?

I really would love to try out laser cutting. ..But have no idea what knowledge it requires. I want to be able to design and cut custom wooden puzzle, laser cut fabric and also to cut felt and foam. I would like to start up a small home business. Keeping in mind that I have no clue what knowledge it requires and also know that I have 4 kids and will have to have this machine in my home. I do own a silhouette cameo but unfortunately it does not cut felt or wood. It’s a fun machine for cardstock and all…but nothing heavy duty. So is it safe to have a laser cutter at home with kids?? I mean will the light or whatever that comes off the machine be harmful for my children? Also how much is the cheapest desktop version? Will it be able to cut large fabric? Can it cut 0.5” or 0.75” hard wood?? Would that be pushing my luck?? Please let me know…so I can start saving up for it. I really really love crafting….but availability of items and affordability is a big issue. Thanks!

Posted by shazni 2 years ago


Circuit design

Hi, I’m hoping someone could help me. I’m looking to design a circuit for a college project that controls a 240v light. The circuit and light will be controlled by a switch however when the switch is first turned on the light needs to remain off (no power supplied) regardless of the amount of time the switch is on. If however the switch was turned on off and on again then the light needs to come on. Any ideas of a circuit and components required to produce something like this? Your help is greatly appreciated.

Posted by Worby10 4 weeks ago


Rotary Tool neck thread size

I have several ideas for rotary tool accessories that would make my life easier, but they would have to be attached at the neck. So I need to cut out a hole, and tap it out to the right thread size. Anyone know what that is?

Posted by BoomGuy 11 years ago


How to get an instructable featured?

Hey can i know how to get an instructable featured my friend got his in a day?

Posted by iloveandroid 5 years ago


What can I do with Pro?

I recently recived a free 3 month pro membership for having my Instructable featured. (See the featured Instructable here.) But I don't know what I can do with Pro! What are some pro benifits, and how do I use them?

Posted by Chikpea 4 years ago


Is it possible to link Arduino modules with a portable induction stove?

Hi guys! I would like to get an opinion on my first ever project. I would like to link an Arduino module to my portable induction stove. I was hoping that it would be able to do this: ---------- START ---------- 0 min - Start recording sequence Press[Rec] Heating Value: 0 Systems records no change in heating level 1 min - Puts ingredients and increases temperature by 3 levels Press[Increase Temperature]x3 Heating Value: 3 System records an increase in heat by 3 levels upon reaching the 1st min. 7 min - Dish is heated up, let it cool for a bit, decreases temperature by 1 level Press[Decrease Temperature]x1 Heating Value: 2 System records a decrease in heat by 1 level upon reaching the 7th min. 9 min - Dish is cooked. Decrease heating level to 0. Press[Decrease Temperature]x2 Heating Value: 0 System records a decrease in heat by 1 more level upon reaching the 9th min. 9.5 min - Stop recording sequence Press[Stop] Heating Value: 0 System stops recording. Recording is saved and ready for 'reading'. ---------- END ----------- Upon completion of the recording, this set of sequence should be able to upload back to the stove to replicate an identical set of heat change with respect to time. As such, would this project be possible? I would like to modify on the existing parts on my stove that I have. It comes with an interface or some sort that is linked directly to the buttons on the stove. (the buttons available are some commonly used presets and timer settings and an increase and decrease button for the heating level and timer) Any opinions and feedback would be greatly appreciated!! Thank you very much!! - Eddie (Newbie in electrical and programming)

Posted by eddiewoo 5 years ago


An alternative to expensive grinding stones

For some people buying a decent grinding or honing stone is a lifetime investment.Prices of over $500 for a single stone of a very fine grid are not uncommon.But what about the average Joe who just needs to sharpen a knife or tool every now and then?If slicing and dicing is not your living than investing in a set of diamond plates might be better than getting a set of stones.But there are limitations, firstly their size and then how long they last.The later is really important if not used correctly as even diamond toold can be ruined quickly.In some case these small sharpening tools are hard to handle.The bigger plates can still be a pain if they don't come with a proper mount.Well, and if you forget to clean them after use and put them in a dry place it will be quite hard to remove the rust.A nice alternative I found is sandpaper, specifically sandpaper on a glass plate.Good wet and dry sandpaper is available from almost gravel to a 10.000 grid, above that you might have to make a special order.In general the finer the grid the more you pay due to the ingredients.I use a glass plate from and old scanner as they are both heat proof and really strong, window glass is not recommended here.The glass is covered with strips of kapton tape for the ease of later cleaning.The tape is then evenly covered with a contact glue, preferably the spry king to get an even cover.Same for the sheet of sandpaper.I try to get the glue over the glass edge a bit and to have at least two sides of the sandpaper going over an edge.Just to have an area to work close to the edge without risking to lift the paper off.Once a sheet is too worn I place the plat in the oven for a few minutes so the glue softens and peel the sheet off.If too much glue remians on the tape I replace it before I put a new sheet on.Of course you need a bunch of plates although it works fine with two different sheets halfing a plate.The thing works best under slow running water, so use your tinker skills to come with a suitable frame and water supply ;)But even with just a spray bottle it is a cheap way to replace a costly stone, especially if you do require a bigger surface area.

Posted by Downunder35m 4 weeks ago


I need to know how to make a dc male jack with battery clip

I have a dc male jack and a battery clip.separately.i need to know how to connect .this is from a project i saw in instructables.please help.

Posted by ABhiramS5 4 weeks ago


Why don't old /community/* urls redirect to new /topics/* urls????

All of the older links to a topics on Instructables link to instructables.com/community/page urls, but a while ago (I'm not sure exactly when) all the /community/* pages were moved to /topics/*. Clicking the old /community links returns a 404 error, which is annoying because then I have to manually replace the "community" with "topics" in the url. So my question is, why can't all the /community/*/ pages redirect to their respective /topics/*/ pages?

Posted by scitronboy 4 weeks ago


Electric knife sharpeners.....

Back in the day we already had these tiny grinding wheel like tools in the kitchen.Plug it in, press a button and slide the knife through.The blade was supposed to come out razor sharp if you trusted the ads....For obvious reasons a grinding wheel moving along the edge is not a good thing, especially not if both te up and the down movement work on the edge.As soon as they appeared they disappeared only to emerge years later in a "modern" form.The latest incarnation now comes with ceramic wheels to give an even sharper finnish LOLThe problem however is still the same, first the action of the whells then the fact that it is next to impossible to get different angles.They are really only good for some knifes you use in the shed if nothing else is available.A now much hyped electric sharpener is basically just a tiny belt sander with guides attached to it.And don't get me wrong, they come in handy for certain works.But if you ever used a belt sander on a flat piece of steel you realise that it is quite impossible to get a flat surface finnish.The belt curves around the edge and this results in a curved or beveled edge.Obviously the claim to sell these is that a beveled edge has superior strength and sharpness compared to a straight angled edge.And then there is the ability to adjust not just the sharpening angle but als the grid of the sandpaper.The finer you go, the better the result and sharpness...Now if we trust those who create swords from raw iron ore then something is wrong with the belt approch.These guys would tell you that you should always use a flat stone and to slice a piece of the stone.But also that a beveled edge is a sign of wear, something a good butcher will confirm.The angle of the edge party affects how sharp and durable the edge will be.Usually there is a compromise between blade thickness, meterial and edge angle.Just go from razor blade to an axe and include severel types of knifes between them.So a beveled edge in my opinion is only good for brute force tools but not that good for fine slicing and dicing.I tried to sharpen a wood chisel on one of the belt sander toys...It turned out to be far less precise and the edge was not fully straight.Could be down to lack of experience but if you ever try it let me know your results.The produced edge was also quite unusal and often bad when used as intendet.Far more chipping than cutting.Difference between straight angle and beveled angle when using a knife.You might want to do some lonely woodworks while fishing.A good knife now just eats into the wood and lets you cut and slice pieces of at almost any angle of the blade.With a beveled edge however you face the problem that your working angle is drastically reduced.Tilt the knife a bit too much and you suddenly just slide off the wood and into your flesh.If you grind and hone a knife to a 20° angle on a flat stone than from all angles above 20° you can cut.If you belt sand a knife to a 20° angle you end up with a bow over this angle.The actual usable working angle can be as low as 40° on a thicker blade.In theory it is possible to overcome this bevel problem.Sanders with a backing plate for example or by using just enough pressure to take material off.The first will destroy your belts quickly, the second takes forever.Some people just sand the knife at an angle to the belt, so instead of having the belt running at 90° to the edge it runs at 60 or 40°.Reduces the buckle but also the sharpness as the actual edge is now rounded.The only real way to sharpen a knife would be with a cutting or slicing motion, something that usually cuts your belts once the edge becomes sharp enough.So should you use them after all?As with all tools it comes down to quality and how you use the tool.If you know what you do and what the limitations are an electric sharpener can save you a lot of time.Someone with a desire for razor sharp knifes and tools might only use them on the lawn mower...You can however very well use sandpaper for sharpening a knife, which I will explain in another post....

Posted by Downunder35m 4 weeks ago


From Anime to Reality

Someone was such a fan of Akira that they recreated Kaneda's bike from the manga and the movie. The bike is actually street legal and I'm looking forward to reports of it tearing it up in Neo Tokyo in vicious street gang battles. Extra bonus points if it manages to create light trails. Link

Posted by fungus amungus 10 years ago