To Whom it May Concern

To Whom it May Concern:I recently discovered a website dedicated to knex: http://www.knextoyzone.com/. However, on this website I found three familiar guns found on Instructables and KnexInnovation. Two are Dsman's, and one is Loosewire's. They are found by clicking on "Gallery" amd then the subcategory "Guns". If you didn't post these guns and knew nothing of this, please speak now and maybe we can e-mail the creator of this website that their users are commiting plagiarism. Thank-you for your time.

Topic by DELETED_DELETED_DarthVader 10 years ago  |  last reply 10 years ago


Security concerns for a macbook? Answered

I'm concerned about the security of my macbook while I'm in a public network, even though I'm pretty sure I'm reasonably secure: Can someone just clarify this for me? If no one else can physically get a hold of my macbook, and I've got remote login, remote desktop, remote management, (etc) all turned off, is there still much of a chance that my data could be stolen and/or my macbook messed up? I still need access to the internet, and bluetooth at times, however... 

Question by .Unknown. 7 years ago  |  last reply 7 years ago


Question concerning legality

Hey guys, quick question, I figured this would be a good place to ask it. I have a setup that allows me to record streamed music from, say, Spotify (yes, this is legal, as long as I don't use the recordings commercially) and basically get free mp3 files. If I wanted to use one of these recordings non-commercially in a video on Instructables or anywhere else, would it be legal? Danke schon in advance to any help you guys can give!

Question by Thorondor95 9 months ago


To whom it may concern.

There are roughly 10 or so people that know the REAL truth, the rest of you are just butting in, either you've just heard DJ's side or just heard KI's side. Alot of the "pro's" are suddenly butting in, but not saying one word to DJ, which I find incredibly stupid, since nearly all the comments we make are REPLIES. But, that's just me, and I doubt you actually care what one person thinks, that is the problem with instructables. Either way, I just think that maybe if certain people will stop posting comments like "KI SUKS IT BANNDDED ME" or something like that, nothing will happen. You do realise that KI were actually ignoring these things, right? So anyway, just thought I'd post this forum topic.

Topic by yerjoking 9 years ago  |  last reply 9 years ago


Judging Criteria concern...

I was just looking at the Finalist in the Coded Creations Contest sponsored by Microsoft. There are very few where the main part of the project they built was "programming" based, One I read even stated right in the instructable that they just "copied the code from somewhere online which they could not remember were". Another showed how to install software which did involve programming... While the finalists chosen were definately cool and Great instructables were they really "Coded Creations"? Of the entries submitted there were several that did not make the finals that took advantage of thing specifically mentioned in the contest description:  "use of Visual Studio, Microsoft Azure, Kinect/Xbox, Windows Phone apps, or any Windows app". One entry did a phone app that even had voice control.. it was super cool and showed great programming tecniques and cool features but again did not make the finals.  Should the judging not have looked closer at the theme of the contest when picking the best to be finalists? It is like if I build an awsome Jet car from scratch and as part of it I programmed the clock by using code I found online... would that deserve to be in the finals? Sure a Jet Car is awsome but copying code for a non integeral clock while technically it is "coding" but it is not what makes the jet car awsome. I bet if it was stricktly a team from Microsoft doing the judging it would be a totaly different list. Anyone else have thoughts on this?

Topic by MadDocks 3 years ago  |  last reply 3 years ago


TO DELETE OR NEVER DELETE THAT IS A CONCERNE !

I want to know, in full disclosure, what future plans HQ has for the delete function..Please do not put us off, with I will submit your concern's, But go to the decision maker to get the REAL information !.If there is fear for your position, then assign someone planning to leave, for resolving important this task..

Topic by iceng 1 year ago  |  last reply 1 year 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.

Topic by Downunder35m 5 months ago  |  last reply 5 months ago


Direct communication concerning membership details?

Hi! I just want to know where I have to go on your website to gain a means of getting in touch ,re.write you a letter concerning any personal questions about my membership, I may wish to ask? For example, If I want to be a paying member,but,at the moment I cannot afford it,however ,in the future I may be able to afford it,...Therefore,what avenue of communication do you have for me to be able to discuss this matter ?   With Kind Regards   Glennbo.

Question by Glennbo111 3 years ago  |  last reply 3 years ago


Google boss concerned about privacy??

One coolest pieces of technology in the hands of independent Makers is the UAV; students and hobbyists can exceed military spec for drones and quadrocopters for a fraction of the cost.  So it concerns me when Eric Schmidt, head of the company that put millions of people's homes online without asking, and has been fined in several countries for harvesting personal data via wifi, trys to influence American policy makers, invoking the demon called Terrorists Might, so that the use of UAVs is restricted on thd grounds of "protecting privacy". What say you, Makers? http://www.bbc.co.uk/news/technology-22134898 Image of Eric Schmidtvfrom AP via BBC site. 

Topic by Kiteman 6 years ago  |  last reply 6 years ago


Concerning "pirahna" 5mm superflux leds.?

 would appreciate some info regarding the  1/2 W 5mm "pirahna" superflux leds.  started using them and think they are great.  do they need any other regulating component other than a resistor to keep them running  safely?  how do they hold up over time? i just need to use one or two in my projects (powered by a  9v unregulated wall wart).   thanks!

Question by lightartist1 8 years ago  |  last reply 8 years ago


melting hdpe plastic health concerns?

I want to do some vacuum forging (from another instructables) and i was thinking about melting milk jugs for it. if i heated them with a blowtorch would it emit bad fumes into the air, as long as i didint burn it?  I would do it outside and im 13 so i dont want to mess myself up.  if it does make fumes, would a respirator with a fine filter stop them?

Question by awesomeepiceli 6 years ago  |  last reply 6 years ago


non instructable instructable. My concern

So in the last few days I have check out several instructables that have interested me only to find that they were not instructables but just Look here what I built. Instructables have been for years now a place to post how to do things not a repository of personal glory. If a person wishes to do that there are site set up just for that. Please instructables I know it is a big job but can you please start deleting these posts as they are less then helpful.

Topic by apburner 5 years ago  |  last reply 5 years ago


Security concerns over EXIF data

This is a small security concern which I'd only thought about over night and was worried to check. When you upload images, the EXIF tag data contains info from the camera including if your camera is enabled with GPS, a spot on location. This is only worrying if you're going to post something specifically expensive which will remain in location.  Last week I published an instructable for a recipe using expensive rare ingredients - it's not past the wit of man to take the EXIF GPS data from the image and visit that location. Because instructables are a how-to to do it yourself at home, I don't think there's any need to hold this information.  I know the burden could be left with the author to scrub his images but this could be automated within the image upload system when you process 'original' images.  If it's a specific location that is required in an instructable you could just add it to the text.  So my question is, can you look into implementing it and if possible scrubbing the hundreds of thousands of images currently on your servers.  If not, I may need to go through a few of my more recent ones and do a bit of scrubbing myself which may delay things a little and there's always a danger I'll accidently forget one time. Cheers, Tim

Topic by tim_n 8 years ago  |  last reply 7 years ago


In Philippine law, is there anything concerning alternative currencies?

Google turns up null. I just want to know if there's any law or central bank policy regarding alternative currencies. (Just got interested because of all of the alternative currencies springing up all over the U.S.)

Question by nutsandbolts_64 5 years ago  |  last reply 5 years ago


Potentially revolutionary idea concerning remote power?

I learned in physics some time back that directing radio waves towards a metal object will induce an alternating current. My question is: Could you power something with an external but unconnected power source? I'm thinking something like a guitar with no lead that still manages to send back sound data to the amp. NB If this idea already exists, please tell me.

Question by The Jamalam 8 years ago  |  last reply 8 years ago


Concerning the upcoming Maker's Faire in Queens, NY....

Unless some sort of miracle happens  (something I really doubt at this point), I will be unable to attend the Maker Faire in Queens NY this year which is only 6 day away ! I was really hoping to be able to arrange for a way up and a way to stay, but due to circumstances beyone my control (more on that later), I will not have the way nor the way to stay;  so sadly it will be a no show for me.   Next year, if I survive until then, I WILL be there unless I have lost everything here (I am wondering about that prospect too due to the very same "circumstance" I mentioned before).  Those that are able to go, I want to see all kinds of pictures (please).  Thanks !

Topic by Goodhart 7 years ago


2x Feature request: Concerning the Slideshow feature

Two things about slideshows that I think could use some improvement. 1. When I put my mouse cursor over one of those tagged areas (yellow rectangle outlines), I'm probably doing that so that I can read the comment that shows up. It would make sense to automatically pause the slideshow until I pull the cursor out of the rectangle, so that it doesn't switch pictures while I'm reading. 2. I'm not sure about this, but it appears to me that the slideshow first decides that it's time for the next picture, and then loads it. This means that on a slow connection, the time it takes to load the picture can significantly shorten the time that you get to see the picture. Then, after an all too short viewing period, the picture goes away, and the slideshow shows only a big white area while loading the next pic. It would make sense to try and switch pictures every T seconds, and load all pics as quickly as possible. If the next pic is not availible yet, don't hide the current one just yet. =) /Gibson

Topic by gibson_se 9 years ago  |  last reply 9 years ago


To whom it may concern. Regarding: Building a Pneumatic Launcher

Question: How can I use a CO2 cartridge for propellsion, attached to a valve & trigger that is linked directly to the barrel without the use of a air chamber tank? Any ideas of how to engineer this is much apppreciated. Thank you, Gerald J. Wygladalski President & CEO SafeBrella Co.

Question by 9 years ago  |  last reply 9 years ago


Logistical Concerns: Building a Garden on my Apartment Patio

Edit/Update: I AM BACK (for those of you that know me, which is no one, :( womp) and I have decided to do this. I have moved apartments and am now on a nice first floor apartment with a large patio. I am planning things out and going to do some math this week. I am just curious, is there anything like this out there? I know I've seen those hanging gardens where the water trickles down? That is only good enough to grow herbs/small plants etc. Anything else? Thanks for your time everyone. I found this website today, and I have to say that I am glad I did! I've literally spent hours scouring the guides and have this idea in mind. Even through the questions I pose here, I must always keep in mind, "Will it work?" So please keep that question in mind as well. I have a space on my apartment patio that is fairly large (I will get exact measurements at a later time). I will need an elevated garden (with a trough w/reservoir below to capture the water, I live on the second floor and I can't let it run down below). Considering I eat a lot of fresh fruit and vegetables, I'm also thinking of a compost tumbler. First question, can I put almost anything in a compost tumbler that will break down, like fruits, vegetables, grass, leaves, et cetera,? Or does food waste and yard waste need to be separate? I live in Southern California, so my patio gets about 5-6 hours of direct sunlight. I've also been reading that compost bins need some humidity as well. I was thinking of using the reservoir under the garden to put in the compost tumbler from time to time? Would this be effective/necessary? Slugs might not be a problem because I'm on the second floor, but I'm thinking of keeping and Aloe plant out there and use the Aloe spray I saw in a guide. We do have squirrels, but are they attracted to Tomatoes, Cabbage, Basil, et cetera? If so, I will need to build some sort of cage that will keep them out. Is this practical, necessary, and ultimately effective? Thanks for your time ladies and gentlemen. If I do end up going through with this I will record the whole thing and put a guide up!

Topic by Neddaf 9 years ago  |  last reply 8 years ago


Serious Notice guys n gals concerning me.......

Hey, just wanted to let you all know (so, maybe I put this in the wrong forum) that I am up this early in the morning ( 6:30 am ) because I have to go to the hospital for a complete cardiac / pulmonary workup and battery of tests. Yeah, getting older stinks, especially if you let you physically self atrophy. Anyway, just wanted you all to know, in case you don't see me for a few days or longer (the tests only last about 4 hours or so, but they could potentially bring on cardiac arrest, or trigger a severe asthma attack, depending on the kind of shape I am in ( it is kind of a pregnant pear shape actually ). See you all when I am back from the hospital....Addendum: I have a lowered amount of blood flow to my heart. What this means is that I am a borderline heart attack candidate if it gets any worse. Cholesterol was a little high, triglycerides way high. I will find out details on Friday I suppose when we discuss options...Addendum 2: The pulmonary tests ( 05/21/2008 ) were horrible, but there doesn't seem to be anything overly wrong that is obvious to the tech, with my lungs.....will have to wait for the doc's report thoughAddendum 3: Well, I am afraid things have progressed to the next step... I have to have a heart cauterization to see what may be blocking the lower artery, and how bad the blockage is. If not too bad, they will simply do a quick angioplasty and open it up, but if bad, I will then be scheduled for a bypass. *sigh* as we age the fun just never ends, eh ? Addendum 4: It will not be THIS coming week, but most likely next week, they will do the double bypass. Because of the location of the blockage at a major branch which would end up cutting off flow to the other artery, they have decided I best have the bypass done. PS: there was hardly ANY pain in the cath procedure.....I am going to give the person that told me that a hard time next time I see them :-) But I have experienced broken bones already, so I know the next step is not going go be a picnic. Addendum 5:I may be able to get the bypass done as early as Monday the 9th Yay ! Addendum 6:I am now into my second week of recovery, and things are progressing so well, my wife is afraid I will want to go back to work early and she will be alone again.

Topic by Goodhart 10 years ago  |  last reply 10 years ago


Question: Has anyone had any trouble concerning the PopUp ad on the Survey ?

Lately, when I sign in (under Fire Fox, newest upgrade) the Survey pops up and runs a script that makes it impossible for me to sign on (it keeps taking the FOCUS off the text input box). I have to cancel it, many times I have to cancel it 3 or more times to get it to go away. Is this just me, or have others gotten this also...?UPDATE: Here is a screen shot of the survey I mean...

Topic by Goodhart 10 years ago  |  last reply 10 years ago


can i use packing peanuts to fill the space between a dog-eared four foot fence and a clay dirt bank?

Using packing peanuts in a unusual way - my concern is will they last and environment concerns such as air emmisions and ground water contamination

Question by 9 years ago  |  last reply 9 years ago


can i use packing peanuts to fill the space between a dog-eared four foot fence and a clay dirt bank? ?

Using packing peanuts in a unusual way - my concern is will they last and environment concerns such as air emmissions and ground water contamination

Question by 9 years ago  |  last reply 9 years ago


Should I be concerned about durability issues for the 13 inch MacBook (mid 2009 version)?

Hello, I just purchased the upgraded 13 inch MacBook white (mid 2009 version). I am a relatively careful & light user. Should I be worried about durability issues?

Question by 9 years ago  |  last reply 9 years ago


Wallace & Gromit/ Saw 3 Trailer Mash-Up

This is... concerning.

Topic by canida 11 years ago  |  last reply 11 years ago


My dog eats 3 or 4 squirrels a week; this anything I should be concerned about? Answered

My dog eats 3 or 4 squirrels a week; this anything I should be concerned about or anything I should watch for?  He's a little over a year, 65 - 75 lbs. pure bred, UTD on everything. Takes Trifexis [sp]. He runs free on 2 acres.

Question by Sovereignty 7 years ago  |  last reply 7 years ago


internet security

Is there a means to review and adjust our personal account security settings for this site? i.e. privacy concerns 

Topic by Hudson-108 2 years ago  |  last reply 2 years ago


Is it possible to switch on a computer CPU using a TV remote control?Is there any schematic for the circuit concerned?

I am new to Electronics so it would be great if there is a simple way .

Question by Utsav25 6 years ago  |  last reply 6 years ago


Hope Forum (concerning the Con.) - See what might be there, make suggestions on what should be there, etc.

Just wanted to add the link here that goes to the HOPE discussion forum, in case anyone is interested. HOPE forumThat is a link to the discussion forum for HOPE 2008

Topic by Goodhart 11 years ago  |  last reply 10 years ago


Images in the Instructions

To whom this may concern, an administrator or another customer/user of this site, I have a free account, and i know that i can't do things like download pdf's, though i didn't have a problem going through each page and read online, though now, i'm unable to see the multiple images concerning each section of instruction pertaining to the demonstration of the instructions, My questions is: has the free account been demoted by taking away the image viewing privileges?

Topic by thewildnative 7 years ago  |  last reply 7 years ago


Scariest Cartoon Character?

What cartoon character do you consider the scariest? creepiest? things concerning that. yeup. mine is the character Him from the Power puff girls.

Topic by CLASSIFIEDINFORMATION 9 years ago  |  last reply 8 years ago


Suggestion - Sticky Bugs to Questions page

There's been a lot of questions concerning bugs about pictures (from mostly new members) recently, and I suggest that we simply sticky a comment or forum topic to the top of the questions page, concerning the current bugs (to prevent these floods of questions). And if not that, maybe a comment after the submit page, something like,"Is this the correct area to post your question/problem? If it involves a bug on the site, refer to the Bug Report section." After all, just a suggestion.

Topic by nickodemus 8 years ago  |  last reply 8 years ago


Saftey issues

Hello, I have been thinking about a project for a long long time, using 2 huge super capacitors with usb devices, such as an ipod. I am currently thinking of using 2 these: Link to 350 maxwell ultra capsLink to 350 maxwell ultra capsBut my real concern is safety. These capacitors can produce loads of amps at 5v, and that alarms me. Are my concerns real, if so, is there any safety precautions that one could take?

Topic by penguins 10 years ago  |  last reply 10 years ago


Yes, well the Front fell off.....

This is almost unbearably funny: an interview with a senator concerning a ship with crude oil as its cargo....well, have a listen... ;-) .

Topic by Goodhart 11 years ago  |  last reply 11 years ago


question about kitchenaid mixers

My family has a 250watt k45ss kitchenaid mixer that my family uses to mix up stuff to bake. My mom with in the past 2 or 3 months has started using it to grind wheat, and she is concerned that she is wearing the thing out. She wants to know if the thing needs oil since it is making a grinding like noise at low speed, and an unfamiliar hum a high speed. so is there anything to be concerned about? (note: the mixer is about 20 years old)

Topic by clasic_traveller_diehard 10 years ago  |  last reply 10 years ago


paracord problems. Answered

I have had a sick paracord bracelet, and I have one concern..supposedly paracord shrinks when wet. wanting the keep my creation safe I was wandering if there was a why to save it if it gets wet.?

Question by CaseBoy 8 years ago  |  last reply 8 years ago


Prophecies for Future Research

800 years from now, archeologists will conduct research on landfills and compare international findings concerning the wealth of an ancient culture based on the amount on disposable diapers found. Share your own.  

Topic by AngryRedhead 9 years ago  |  last reply 9 years ago


Arduino Home Theater Screen Design

Hello Makers! I have been designing a home theater retractable screen housing that is arduino based. I want to use stepper motors for the added precision and will be playing with some minor resin/fiberoptics to decorate the front in a movie theater-esq manner. My concern is with the stepper motors. I would love to know if anyone has attempted a similar project. The speed of the descent/retraction is not all that important but consistency is another story. I also have some power concerns. Any input would be greatly appreciated.

Topic by jab06y 8 years ago  |  last reply 8 years ago


Etching a knife blade?

I am concerning etching a knife blade, by using nail polish (or something) to cover the part of the blade I do not want etched and raw  muriatic acid to etch with.  Anyone got any suggestions or recommendations.  

Question by WazIt 4 years ago  |  last reply 4 years ago


How to make a conveyor belt with no wood or metal?

Hello, I am a student who is working on a project. I was wondering if there was a way to create a conveyor belt with no wood or metal? The biggest concern for me is the motor. Thanks.

Question by seal308 5 years ago  |  last reply 5 years ago


Is someone willing to give me a good amount of technical advice concerning heat dissipation using a Peltier device ?

Ok, I have a laptop that I use to play many videogames with, and as you can imagine, it has an overheating is a problem. I have software that monitors the GPU and CPU temperatures while I play. The GPU and CPU are rated at a 100c max temperature. Now that the summer season has started, my laptop gets hotter and hotter as I play. I am usually forced to Under-volt my computer so that it stays below safe temperatures. Now, I was digging around online and came across something called a "Peltier device". It is a small ceramic plate (with electrical nodes inside) that when electrified, transfers the heat from one side to the other. The peltier I got is rated at 545 watts, 32 amps, and 18vdc, and gets as cold as -60c, 150c. I ordered a desktop power supply online, along with 2 CPU cooling systems. (I.E.  2x Professional grade heat-sink, and 2x 120mm fan) The Power supply outputs 430watts, 28 amps, and 12vdc. I planned on taking these parts and simply sandwiching the peltier between 2 heatsinks, having 1 hot heatsink+fan and 1 cold heatsink+fan. I planned on pumping the cold air into the air intake on the bottom of my laptop, and just pump the hot air into the room.  Unfortunately, the problem I face (and this is a really stupid mistake) was that I did not measure out this whole assembly. It turns out, the peltier face plates are roughly 2.5" x 2.5", whereas the heat-transfer faceplate of the heatsinks are only about 1.5" x 1.5". Now, I wired this all up, and put it all together, ignoring the parts of the peltier that were hanging off and lo' and behold, the peltier worked as designed, one side got extremely cold, and the other got hot. The only problem is, over time, since nothing was drawing the heat away from the edges of the hot side, it transferred over to the cold side, thus warming it up to about room temperature, negating the entire purpose of the contraption.  This is the part that I need help on, would simply taking some aluminum plates that are large enough to cover the entire surface of the peltier, smother both sides in my remaining thermal compound, and then connect this aluminum (with more thermal compound) to the heatsink? This contraption is essentially meant to be a laptop cooling pad. Mounted inside of an old computer case. So it needs to be mobile (IE, liquid cooling is not an option). Can anyone think of a better solution to this? 

Question by schwerlin 6 years ago  |  last reply 6 years ago


Mobile phone camera Upgrade

Would it be possible to take the camera of a web-cam and replace the one in a mobile phone with it? Attaching the camera isn't my main concern but weather the extra data will be able to be transferred to the screen.

Topic by bamphy 8 years ago  |  last reply 8 years ago


How do you build a cheap treehouse?

I'm a kid who really, Really, REALLY wants a treehouse. But my parents don't know the first thing about building treehouses, and they're concerned about cost. Please help!

Question by 10 years ago  |  last reply 10 years ago


Do the RealSimple Recipes Count?

Concerning the Fake it, Don't Make it! Contest, I was wondering if RealSimple's (RealSimple.com's) Instructables count. They are added to the group but I wasn't sure if they were just there to attract visitors and inspire them, or what. Thank you.

Topic by Bran 11 years ago  |  last reply 3 years ago


Terrible Instuctables

Hi all -- I know one of the cultural things about Instructables is that we are supposed to keep it positive, and I love that about this site. Also: I am not talking here about Inctructables written by non-English speakers or those not yet adults -- everyone has a huge safe zone as far as I'm concerned when it comes to learning how to write and create an instructable. What I am very concerned about is the recent rash of posts which are, if we are honest, promotional videos for other sites or spammy one-step posts which are of no help at all when it comes to building an actual project. Is there any thought about policing the site for these sort of non-value-added submissions?

Topic by TheFrankTurk 3 years ago  |  last reply 3 years ago


Drawbot

Hi I am making a drawbot and was wondering how to safely attach it to the wall. I've seen options with fishing wire and string etc. However, my concern is that it won't be able to hold the significant amount of weight. What other alternatives do I have? 

Topic by hthnc-student 6 years ago  |  last reply 6 years ago


Covert 12v dc to 15v and 3v?

Hi guys, I need to convert to 15vdc and 3vdc from a 12vdc source... any ideas? Efficiency isn't the biggest concern, but size and simplicity really come into play. i promise credit if it becomes an instructable.

Topic by gschoppe 10 years ago  |  last reply 10 years ago


Help with LED matrix (daft punk) table Answered

Ok, so im still relatively new to electronics so please bare with me.  But say i were to make this table with an 8x8 matrix, as far as the wiring is concerned, is it really as simple as making the matrix and programming it with an arduino? 

Question by texpert 6 years ago  |  last reply 6 years ago


Earth Magnets vs Electromagnets?? Answered

I have an earth magnet/ neodymium magnet that is pretty strong as far as pulling power is concerned but would an electro magnet have more pulling force or power. Its a small enough earth magnet that fits in my pocket. Thanks. AL.

Question by alsports2000 7 years ago  |  last reply 3 years ago


What's a good cost effective way to make a large plastic body/case?

I'm working on a kitchen countertop type of device that would be similar in size and appearance of a large coffee maker. I plan on making around 50 of these for an initial run. Cost is a factor to prove that a profit could be made while not outsourcing the work involved. My goal is to keep this cost below $30 each part, but could go as high as $50. The body will need to be hollow, and has initial dimensions of 18"x12"x8". It does not need to be one piece, several pieces that can be assembled is actually ideal. Here are a few options that I have looked at as well as my concerns... -Injection molding- I worry about the setup costs for equipment let alone the space needed. -Resin casting - I worry about it being too brittle and effectively making workable molds for assembleable parts. -Resin coated foam - I worry about the look of quality as well as the cost of foam. -Vacuum forming - My main concern is the cost of sheet material. I'd appreciate any input, whether it is to add more ideas or to address concerns that I have.

Question by jpettit 6 years ago  |  last reply 6 years ago