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Knex Construction?

Hello everyone, I am thinking of building something from knex, but I do not have the slightest idea how. Basically I want a stand that will hold my DS, psp, two ds games, and three psp games. I think the psp and ds will just sort of dock/hang on the sides of the stand, the bottom of the stand will be risen as to reduce dust, and improve looks (aka legs), and the area for the five games will be divided to provide two different depths. Moreover, there needs to be a front piece to keep the games from falling out of the front. Perhaps a tilt to the back would be nice. Let me know what you think and any ideas you have. Thanks!

Topic by Murdok    |  last reply

Willing to Construct Projects

Hello everyone. I'd just like to offer the service of project construction. I know a lot of people have great ideas that they want someone to make for them. I would be willing to make these projects. I am pretty good at soldering and know about how to construct circuits (I can do electronics). I don't know how good I am at other types of projects or what people would want, so just ask! Finally, I'd be willing to construct these for free on just one condition. I'd like to be able to sell kits of what ever the project is. I'm looking to open up an online store and need some projects to do. Even if you don't want me to sell it I probably would still do it for free. Thanks, and someone please have a project! :-)

Topic by Gjdj3    |  last reply

Solar Panel Construction

Hello Everyone, this is my first forum post!I had a question and couldn't think of a better place to turn to than this.Basically, I am constructing, or planning to rather, an outdoor picnic table. I want to add some gadgetry to it and make it more multifunctional. Sorry to be vague, but a lot of it is still being worked out and since I'm going to post the project on here anyway, I'd like to wait to present the entire project as a whole.My question involves the use of solar panels as a table top surface. I have a basic understanding of how to create a solar panel powered system ( or But my question is this: does covering the solar panel with a piece of acrylic hinder its power collecting abilities? I'm thinking of covering the entire table top surface of my table with solar panels. Aside from the obvious downfalls of people using the table and blocking sun, I thought there would be enough time when its not in use to collect power. But obviously I can't have people eating right on the panels and damaging them. Any guidance would be GREAT! I just want to know if I should even entertain this design idea or separate the panels from the table altogether. Thanks!

Topic by jchorng    |  last reply

how to construct speakers?

Question by kyrros87    |  last reply

How to construct a U.F.O?

Question by mestes66    |  last reply

data logger construction

I would like to have a thin sensor to measure the time of wearing a scoiliosis brace by patient. Any suggestions?

Topic by orthofoo    |  last reply

General Construction part1

Vince, Here's a few more pictures that I think are not in the instructables. The machine is at the college. I'll try to get some more pictures of it Monday. I see your confusion we need an end view of the Y rail showing the X stage mounted. I also made a 3D google sketch up of it that would be real handy. If I can find it.

Topic by Tom McGuire    |  last reply

Speaker amp construction

I've got a 30W ELK-1RT's designed for use with alarm systems etc...nothing really fancy....but we're attempting to find a way to plug it into a computer out in the factory i work at...we're having a rediculous time finding prebuilt amps to drive this thing from a PC line out port....wonder if anyone has something prebuilt or schematics and parts needed to power this speaker from a PC

Topic by crapflinger    |  last reply

Fighting construction toy

I am trying to find a toy that my brother had as a kid. What it is was a battery powered base that you put a spinning blade like object it was all made of plastic, on top of the blade was a plastic shield like object to hold the blade on, the two motor bases where connected together with string that came out the side of the robot and connected to a plastic anchor point of the other. When you turned on the two bases it caused the blades to spin and the tether lines slowly retracted causing the blades to come into contact which then knocked the shields and blades off each other. The person who still had their blade and or shield on at the end won. Does anyone know what these toys where called?

Question by steve-lane    |  last reply

Constructing a realistic lasergame

I am making a laser game/tag system and I would like an IR detector/sensor that can tell the difference between a direct hit and a near hit fly by so that the "bullets"can still cause sounds on a near hit. The sensor should be as invisible as possible but should have a very clear and acurate detection. If there is no way I can make it work I will tweak the guns to be louder. Guns will have to hit over atleast 200 meters "For snipers". I know I need a double-convex lens but I just don't know wich LED I need. It would also help if next to a focused LED there is a way to send an infrared signal in all directions for just a while "For explosives". I have looked at ad hoc but no idea if it would work in there. For the suits I will most likely use sensors connected to a micro-controller/processor. Oh I forgot to mention that I am not using infrared lasers because they will most likely burn or damage the equipment.

Topic by xpalix    |  last reply

Construction ideas for this concept?

Recently, I have been working on a gas 'vaporizer' that evaporates gas before being fed into an engine. During my short-term experiment, I found that this saves ~70% (+-20% for crudity of measurement.) This works because the vapors will burn more thoroughly and cleanly, leading to higher apparent efficiency. Below is a basic diagram of how the system works. You can see there is a container that is half-full with gas, and a hose goes down with many small holes. As the engine's compression draws a vacuum on the container, air will come up through the holes. As it rises, the gas-air surface area rises dramatically, leading to the vaporization of gas. To further increase the surface area, I also added a felt liner on the inside to allow the gas liquid to rise and evaporate. The final mixture ends up very rich, so to compensate, a 'T' fitting has been added to allow air to mix in with the vapors/fumes. Some valves have also been added to control the air inlet (similar to a 'choke') and the amount fed to the engine (similar to a throttle. In fact, it is possible to use the original throttle or choke as a throttle on the carburetor on my tractor!) The problem is: My original design utilized a plastic folgers coffee can, and the flimsy plastic top was hot glued to a thicker plastic cutout for strength and support. Since most glues will dissolve in gasoline, including hot glue, it could not be used. most did not hold anyway. I also tried JP weld plastic cement and it did not hold at all. I had to trash this build. I did, however, get enough use to run the tractor for several minutes while testing gas use. I found that the tractor used nearly twice as much simply running on gas than the fumes. I did not have the float valve and electric pump hooked up with the prototype. Also the 3/4in housing I used may be a bit constrictive and also seems to get slightly damaged by the gas. It will not be a long-term solution.  So I need to redesign the project, and I am thinking of using a 1-3 gallon bucket that is sealed or a gas tank. I need good almost air-tight seals on everything. I am asking for any ideas related to the construction of this device and any tips you may have.

Question by -max-    |  last reply

Looking for constructive critism

I have not written an 'ible in a long while, but was recently so inspired I wrote... Luck would have it that a game contest opened during my building of the first prototype (pre write up, to get things all worked out), which spurred me on even more. Anyways, I am wondering how I missed the mark completely, not even worth a feature. I have had way lesser projects featured....and well, I was only inspired to write this to share. Anyone who has been writing here for any amount of time knows that you need to be featured to be seen. I gave detailed step by step instructions with many pictures well commented...or thought I did. I did something original (Not many game making tutorials here, only 2 other unity ones, and they are on older versions.) I thought the demo game download was a nice touch.  So I am curious for suggestions on how I could spruce it up enough to be considered as a feature. I believe that people would enjoy the topic, and more importantly, I feel people would like to make this or use this as a springboard to their own version. Was using the robot a big faux pas? I see so many other features that use him and thought it was a good idea. Is the game itself that visually unappealing? Perhaps foolishly , but I love the look....I was...even more foolishly...proud of it. It wasn't something I just knocked out, but rather something that a lot of time went into. Time that was truly wasted if it is never even seen. Discouraged. Any suggestions  to how to make it better would be welcome.

Topic by fjordcarver    |  last reply

Construction Equipment in Loving Detail

Belgian artist Wim Delvoye has approached construction equipment and reimagined them with an obsessive amount of detail to create new gothic items that need to be seen to be believed. With laser-cut and carved materials, the "vehicles" are far from functional, but still amazing.That's it, I need to plan a trip to see some new art in other countries. Linkvia Core77

Topic by fungus amungus    |  last reply

scalable geometric construction system

Hi my name is leith and im introducing myself and my design . i am very motivated and really need to work if anyone is interested in a collaboration or another project please contact me . thanks

Topic by C60    |  last reply

How are AudioStrobe discs constructed. ?

What drives the light track and how is it constructed? Thanks for any info.or signposting

Question by dahook    |  last reply

how to construct a camera charger?

Question by sandiri    |  last reply

Autogyro construction tips, please!!!

Hey i would like to get some tips on my autogyro which i plan to build...    a) Rotor shape & size    b) Engine power (and power source) and engine propellor shape & size    c) Materials to be used in construction (durable, cheap)    d) Approximate size P.S. I weigh around 345 Newtons...

Question by hqdiyexplorer    |  last reply

Help in constructing a battery charger

Hi there! I need some help constructing a circuit to charge a lead acid battery. The ratings of the battery are: 12v, 7Ah(Or so). The circuit must have the following features: -> Must be fairly simple (Considering the fact that i don't get all the components easily in the place i live, not even online) -> Must automatically cutoff when the battery is fully charged(Or near full). -> Must also have an indicator, (like the ones we have in a digital camera battery charger, which shows RED LED=Charging, GREEN LED=Full, something like that). -> Charging times can be fairly reasonable (Few hours for a full charge sounds reasonable).  -> Hopefully, some explanation on how the circuit works. ;) Thanks in advance :)

Topic by charmquark    |  last reply

Micro drone construction help

For a school project a partner and I are attempting to build a self controlling quadcopter. It should be able to use a specific input from a photo transistor and the be able to navigate on its own. The only problems that I can see running into at the moment are finding an atmega compatible rotor controller, and that not including the propellers it is going to be under two inches (5.08 cm). I would appreciate any assistance possible in finding a motor controller of this size, and will keep this post up to date with our project.

Topic by Kaptia Teramo  

variable frequency drive construction?

Hello i am working on a go kart but instead it will be powered by a 1/3 horsepower split phase AC motor. it operates off 768 watts and i am curious in using a Microcontroller and a high power H bridge to control it. can anyone help me or give me an idea on how to step up 12v dc into 120v dc and then using the H bridge to generate the frequency and also where to find some NPN transistors that can handle it and how to possibly reverse the direction of the motor?

Question by luig    |  last reply

Need help constructing a transformer!!!

Here are my specs and anticipations for my homemade transformer: Im looking for my transformer to produce a voltage of 400vAC out of a standard 115vAC wall socket. If ive done my math, and this is where I would like do correctig if noticed I need a turns ratio of 1.2 : 3.5. That is 1.2 to 3.5 or 115 turns of primary and 350 tunrs of secondary. 115 X 3.5 = 402.5vAC respectivley. I have access to a fero-core so thats not a problem. Im using 22-20 gauge wire for the primary and 18-16 gauge wire for the secondary. If you find my wires to be of incorrect gauge please let me know. I realise 18-16 is rather large for a coil but I was trying to keep safety in mind do to the high voltage.

Topic by darthDIY    |  last reply


Hi there! I'm Keith-Kid, a regular member of, and just a kid that enjoys making stuff. This place is extremely friendly and welcoming, so feel free to jump into a conversation anytime!I noticed a lot of Frequently Asked Questions around the forums from new members, so I decided to do something about it. Be sure to check back here if you ever have a question. Or, just ask any member to help!So go out there, and Start Making!Instructrables has recently been upgraded, and changed. Please wait while I update this FAQ to the aforementioned changesTable Of Contents1. Getting Started 1.1.......................What is Instructables? 1.2.......................How does the Site make money? Is it profitable? 1.3.......................What is the Instructables Robot? 1.4...................... How can I get started here? 1.5...................... Who can Help me get started here? 1.6.......................What does DIY mean? 1.7.......................What can I write an Instructable about? 1.8.......................What's the difference between an Instructable and a slideshow? 1.9 ......................What is a video on Instructables 1.10....................How can I unpublish my Instructable?2. The Community 2.1.............................How can I make text effects like bold, italic , small text and upper small text? 2.2............................ Why doesn't my Instructable show up on the search page when I type the name? 2.3 ............................What kind of material is considered offensive? What kind of material should be avoided? 2.4.............................Why am I asked to give a number when I send a Private message to someone? 2.5.............................Can I ask for homework help on the forums? 2.6.............................How can I improve the community? 2.7.............................I've spotted an offensive ad! What can I do? 2.8.............................Can i post Instructables in other languages? 3. Other Instructables Features 3.1.............................How do contests work? 3.2.............................Are contests decided by the staff or the community? 3.3.............................What is Burning Questions? 3.4.............................Why is Burning Questions Held? 3.5..............................If Burning Questions is chosen by the staff, then why does it have a voting option for the Instructables? 3.6.................................If I submit 2 answers to Burning Questions, and they both win, do I get 2 Prize Packs? 3.7.................................What regions are eligible to participate in contests? 3.8 ................................How can my Instructable get more views? 3.9.................................How are Instructables featured? 3.10...............................What does an Instructable need to be featured? 3.11...............................How can I be selected to be able to feature? 4. Miscellaneous 4.1..............................Is it possible to intern at Instructables? 4.2 ..............................What is the Community Section? 4.3...............................What is the Marketplace? 4.4...............................I just saw a comment that says it was posted -xx minutes ago! What should I do?5. Current Events and Glitches5.1............................... I just rated an Instructable, but it says that it hasn't been rated yet!5.2 ...............................5.2 I just saw a comment that says it was posted -xx minutes ago! What should I do?1. Getting Started 1.1 What is Instructables?In a sentence: Instructables is a web-based documentation platform where passionate people share what they do and how they do it, and learn from and collaborate with others. A bit more in depth: It was created by Eric Wilhelm, a mechanical engineer, and launched in August 2005. Instructables is dedicated to step-by-step collaboration among members to build a variety of projects. Users post instructions to their projects, usually accompanied by visual aids, and then interact through comment sections below each Instructable step as well in topic forumsWhile a member of the Media Lab at MIT, Wilhelm co-founded Squid Labs, an engineering and technology company specializing in design and consulting. Instructables started as an internal Squid Labs project, which Wilhelm has since spun out as an independent company and acts as CEO.The original content focused mostly on such projects as building electronic or mechanical devices to solve common problems around the home. The scope of the project has expanded to include a larger array of categories, including arts and crafts, food, home, life, offbeat (first known as "not liable") and recently knex, transportation and tech. The site allows uploading of photos, diagrams, video and animation to help explain complex terminology and mechanisms in clear and understandable termsRead more about the history...Also, Read our About to see who works here1.2 How does the Site make money? Is it profitable?The site is mainly supported by ads, which you see in the sidebars and sometimes at the top of the page. Here is the full explanationIs Instructables profitable? - Almost. According to ewilhelm , the site generates enough money, that it usually covers its running costs, but not quite enough yet to be constantly profitable. 1.3 What is the Instructables Robot?The Instructables Robot is Instructable's mascot. His main function is to greet new members and alert members when they receive comments or messages. The robot is friendly and welcoming. You can easily find him around Instructables.You can tell the robot to alert you if you receive a comment in your personal settings. Likewise, you can tell him to stop doing so anytime at your personal settings.Nobody knows how exactly the robot came to Instructables.....time may tell......1.4 How can I get started here?You probably want to upload an image to your profile. You can do that here , as well as change some of your other account settings, like making View all Steps in one page your default.After that, check out How to make a great Instructable , The Guided Tour of Instructables, and the Help Group if you have any questions.1.5 Who can Help me get started here? ANYONE! all users are helpful. If you are confused, or have a question, don't be afraid to ask in the forum of a member of the community. Our members are happy to help newcomers get comfortable. You are more likely to get lots of help through an open thread, but you can ask questions privately (say, for a project in development) through the "Private Message" system.Have a look at other FAQs in the FAQ Section1.6 What does DIY mean?DIY means Do-It-Yourself. It means that instead of buying expensive stuff, make it yourself and save some money. The main idea of Instructables is to make things and share them with others. You will be surprised about how much money you could save if you do things yourself, and we are here to help you.1.7 What can I write an Instructable about?Bearing in mind our family nature, anything at all. If you're passionate about it, and want to tell others how you do it, then write an Instructable. If you're looking for inspiration, check out the Burning Questions to get you started. When you're a bit more familiarized try entering our Contests1.8 What's the difference between an Instructable and a slideshow?In an Instructable, you show detailed step-by step details on how to make or do something. A slideshow is used when you do not have enough documentation or material for a full Instructable. In a slideshow, you can show off projects or things that you have made. If you want to show something, but its not enough to fill an instructable, you can show pictures of it in a slideshow and write a short summary of the project.1.9 What is a video on Instructables? If you do not want to write a full instructable, but you want to present something that can't be fit into a slideshow, you can embed a video as an individual section.1.10 How can I unpublish my Instructable?It's a slightly-roundabout route, but if you click the edit function, then the publish, and unpublish options appears lower down the screen.2. The Community2.1 How can I make text effects like bold, italic , small text and upper small text?Read this helpful Section by Instructables member NachoMahma2.2 Why doesn't my Instructable show up on the search page when I type the name? Instructables are reviewed by the Robot and his human minions before being added to the public pages. Be patient, it may not have gone through the filter yet. Is your instructable lacking images? Sometimes instructables without images fail to go through the filter.On weekends and Holidays, where there is an influx of people posting projects, it may take longer than normal for it to show up in the Most Recents. If there is a problem with your work, someone on staff will PM you.Your instructable may have been caught by the spam filter. If it has, contact anyone in the Instructable team, and they will check it out for you. Just Be Patient.2.3 What kind of material is considered offensive? What kind of material should be avoided?Pornography - Any and all pornographic material is considered offensive. Posting images or links that include pornography is strictly prohibited. This is a family friendly site, children often browse this site.Language - If you wouldn't show it or say it to your headteacher at school, don't show or say it here.Insults and flaming - We have a "be nice" policy here. Please be positive and constructive with your comments or risk being banned from our site.Spam - Spamming, misleading links and site advertising on the forums, orangeboards, instructables, and Private Messaging are strictly prohibited. However, offers and advertising are allowed in the For Sale Section2.4 Why am I asked to give a number when I send a Private message to someone?This is called a Captcha. A captcha is when you are asked a number or word that appears as an image or sound. The purpose of this is to stop automated spam robots from spamming our Community.2.5 Can I ask for homework help on the forums?Of course! Our community is more than happy to help any way possible! Be sure to post in in the right category, because you wont get much science help in our craft section!2.6 How can I improve the community?You can help our community in many different ways:Be positive and constructive in your comments. We are a friendly and welcoming community, feel free to comment and incorporate yourself into forum topics and discussions. Our members are happy to help and guide newcomers in any way they can.Report offensive material. If you spot material that might be considered offensive or SPAM, click the "flag" button next to the comment or instructable. The Staff will review and take action if necessary.2.7 I've spotted an offensive ad! What can I do?If you spot an ad that qualifies as offensive, right click (not left click!) on it and choose properties. In Firefox, you can right-click and select "Copy Link Location". Copy the URL and report it to a staff member so they can take immediate action. If possible, it is also good to take snapshots of the page (On your keyboard, press Prt Scrn and paste it on MS paint or another image editing program) then present it to a staff member.2.8 Can I post Instructables in other languages?Of Course! We would be extremely happy to add instructables with languages other than english. If you need help with some words or terms, feel free to ask around on our community! Proper grammar and spelling are compulsory in any language. We have a lot of users who are fluent in many languages including Spanish, German and French.3. Other Instructables Features3.1 How do contests work?There is no complete answer to that question, as different contests have different rules. Usually, a contest follows these steps:1) A staff member usually announces that a new contest is coming, and what the theme will be, so members will start getting ideas2) The Contest is announced in the front page3) A staff member will post an instructable on how to enter the contest, and will show full details about it.4) The Contest is then opened for entries.5) After a specific time, the entry deadline closes and the winners are chosen either by the staff of by community votes (Depends on the contests specific rules) and are announced.There are two kinds of contests:- Regular contests are the ones that last a month. These contests also set the month's specific theme. These contests are usually sponsored by a company that is related to the theme. For this reason, prizes almost always come from the companies themselves. Regular contest feature more expensive prizes.- Speed contests are those that only last a predefined time. They are called speed contests, because users have to submit their entries before a close deadline. Since they last such a short time, there are usually more than one speed contest can be held in one same month. In some rare occasions, there can be more than one active Speed Contest at a time. Speed contests usually have more and less expensive prizes than regular contests.3.2 Are contests decided by the staff or the community?It depends on the Contest's specific rules. When an Instructable is chosen by the community, the winners may have multiple categories, such as best rated, most viewed, most votes and others.When the staff decides the winners, they usually take the community's reaction to it as a factor in choosing the winners.3.3 What is Burning Questions?Burning Questions is a regular event in Instructables, where the staff (usually Noahw since he manages it) posts a list of Wanted Instructables that haven't been made.Users submit their entries and the best instructable that answers a question on the list wins a prize. Since there are so many prizes (One for each question), Burning Question Prizes are less expensive, so there can be more prizes.(Originally, the prize was an Instructables Shirt, but as the community grew, more instructables were requested, and the prizes were getting more expensive, so now, the prize is usually a Prize Pack consisting of various Instructables Merchandise)When a winner is chosen, the staff will send him/her a Private Message telling them how to claim their prize.The staff publishes a new round every now and then (currently, we should be expecting Round 5.)Rules:Although the rules are posted in the same posts that the questions are announced, these rules are important, and if not followed, an entry wont qualify: - The Instructable must have pictures in every step. These pictures must be related to the instructable. - The Instructable must be of good quality. It must have proper grammar and steps must be clearly understandable and detailed - The title must be the same as the question, or else it wont be accepted. If the question is how to fold a shirt, the Instructable's title must be exactly that.3.4 Why is Burning Questions Held?Burning Questions has 2 purposes:Getting people to create Instructables wanted amongst the communityImproving the site's "googleabilty". Since many questions start with How to...., it helps the site appear more prominently amongst search engines like Google.3.5 If Burning Questions is chosen by the staff, then why does it have a voting option for the Instructables?Burning Questions winners are chosen by the staff. The voting option is available because Burning Questions has been implemented into the new Contest Section, because of various reasons.Although it is the staff who choose the winners, the community's response to the instructables is also a factor in the decision. 3.6 If I submit 2 answers to Burning Questions, and they both win, do I get 2 Prize Packs?No, if you answer 2 questions in one Burning Questions Contest, the staff will send you a surprise extra gift along with your Prize Pack.3.7 What regions are eligible to participate in contests?Some contest are open to any country, while sadly others are not available for some countries. Take your time and carefully read the rules and details of contests so you can save time or make arrangements.3.8 How can my Instructable get more views?The main thing you can do to get more views is to make something interesting and likable.If you want more views, try posting a forum topic so people can learn about it. Instructables with good and clear steps might even be featured on the Front page- the most trafficked part of Instructables.com3.9 How are Instructables featured? Members who have shown to be very helpful inside our community are handpicked by the Instructables staff and are given the ability to feature an instructable is they consider it meets the criteria for Featuring. As Instructables are featured they appear on the homepage, the most trafficked part of the site. 3.10 What does an Instructable need to be featured?It needs to be good - clear, easily-read Instructions, plenty of useful photos, in focus and probably using your camera's Macro Function (Click here for additional info on using the macro setting) , and additional notes on the images to explain extra points.You should use full and proper language - capitalize sentences, check your spellings and don't use sms-speak. (cuz-because). English isn't compulsory, but correct grammar and spelling are.If it is original idea, a novel approach or an enjoyable read, with carefully-arranged images, then it is more likely to be featured.3.11 How can I be selected to be able to feature?If you produce consistently-good Instructables, and especially if you take an active, useful part in the community, you may be approached by Eric ( ewilhelm ) to join the team. There is no set number of members of the team, but new members are not often invited.4. Miscellaneous4.1 Is it possible to intern at Instructables?-Check regularly at our We're hiring page for more info. Instructables member TimAnderson is also running an internship program documenting Heirloom Technologies 4.2 What is the Community Section?The Community Section contains the Forums:You can choose to either view topics by category or View All in an option at the top of the pageGeneral Forums - General Discussions of DIY. You can talk about anything, not just DIYMarketPlace - Forums for job offers, Internships, Kit sales and other sale sin generalHelp - Ask for help, report a bug, or just give your feedback on Instructables4.3 What is the Marketplace?The MarketPlace is a special part of the forums dedicated to bussiness like Job offers, Interships, Kit sales, and other sales in general.You can sell your stuff, or buy someone else's. This section is still fairly new, so some changes might still happen.5. Current events and Glitches5.1 I just rated an Instructable, but it says that it hasn't been rated yet!The current rating system is fairly new. Before, the rating system was simply the option to give it a plus, or a minus.Our new Rating System is based on the one described hereThe new rating system, consists of the ability to give it a rating from a scale of 0.0 to 5.0. This system is represented by a line of stars. You may also give ratings like 3.5 and 2.5.This new system is not yet complete, and there are a few bugs to work out. Currently when you rate something, it is queued to be processed during Instructables' overnight Bayesian rating algorithm-run and does not update immediately.Until it is complete, you might notice somethings, like for example, that most Instructables will have a rating lower than 4.5.2 I just saw a comment that says it was posted -xx minutes ago! What should I do?This is a small glitch we are currently experiencing. The staff is aware of this, so please, do not report this as a bug or make a forum topic about it. It is nothing serious and out staff are working to fix it. Instructables runs on a couple of servers. Sometimes, the serves receive different information, and when they each compare their information, they might get confused and say that the post was made at a time that is not possible.The following people have contributed to this FAQ:* Kiteman* NachoMahma* Brennn10ewilhelmThanks for your help!I hope this Section has helped answer any questions you might have.Have a question that should appear here? Private message me and I will answer as soon as I can.

Topic by Keith-Kid    |  last reply

Lifting form?

Garage plates water damage; need refresher course on plate raising with threaded rod & concrete.

Question by WendellB8    |  last reply

how to istall gypsum boards?

I need to know about fixing technics of gypsum boards on walls and ceilings.

Question by mmansor    |  last reply

How do I stucco a masonry block wall?

I need to stucco an exterior masonry block wall

Question    |  last reply

constructing an a-frame, lean-to roof on a garage

I started framing a lean-to, a-frame roof like a deck (with an a-frame "header" and three joist hangers). The joists are angled at about a 45-degree angle and are perpendicular to the garage (on which I hung the header). There will be two 4x4 posts at the end of the 10'x10' roof. When I looked for advice about this framing style, I found nothing. Is this going to be stable? I designed the roof this way because I have 6' reclaimed cedar fence panels that will run down the roof like shingles. Thanks for your help.

Topic by meralgia    |  last reply


Check out the New innovation in construction using discarded plastic bottles...Think it is not strong enough ? heres the link to the instructable..

Topic by nav.sparx    |  last reply


How can i build satellite receiver and feed it to television directly?

Question    |  last reply

8/10/25mm Construction Kit

I would like to propose a standard for the design of an "Erector Set" type construction kit based on a standard 10mm thick by 25mm wide rail with 8mm holes spaced 25mm apart.  The metric sizing would insure a global participation in the design process.  The main construction rails could be built from any smooth grained hardwood such as hard maple in North America or several other species I have seen used in Europe or ABS plastic, Aluminum, etc. Alternatively, a 5/15 - 3/8 - 1 inch format might find greater acceptance in the US which would allow for use of many standard components such as skate board wheels which use a 5/16 shaft for bearings, etc. Given a standard hole size, thickness, and spacing, a variety of 3D printed components could be designed by the community as add-ons to the basic kit.  Ideally such designs would be done in Autodesk Inventor based on PARAMETRIC MODELS that could be adjusted for say both a mm and inch standard. Laser cutting at TechShops, 3D printing, and other simple home shop built components for connectors, etc., as well as suggestions for utilizing other standard building components such as say plastic tubing for spacers, and other standard hardware components, would greatly expand the features of the construction kit. Ideally Makers, TechShop members, home woodworkers, etc. would produce kits and make them available to "young inventors and engineers" in our school systems as a community project. While I have suggested the above mentioned dimensions, these and other basic considerations should be vetted in a crowd sourced forum before any standards are set.

Topic by astroyny  

Need help with temporary wall construction

Can anyone shed some light on how this is built ? It looks like 2 8ftx4ft plywood panels sandwiched together with some 2x4s and a hinge on the back. I am trying to find out how to sandwich the sheets together so it looks seamless like the image below. Thanks in advance.

Topic by svioletta    |  last reply


Hi... I'm working on a design and i'm having a problem with how i can make a power supply for it. Mainly this what I want to do: Vin = 220v ~ Vout 1 = 7v Vout 2 = 12v Vout 3 to Vout 7 = 5v Can anyone help on how i can make this? Vout1 is for Arduino. Vout2 is for a coin acceptor. Vout3 to Vout7 would be used for servo motors (tower pro mg995)

Question by Gedon    |  last reply

construction pictures of blue streak knex.

Welcome to Cedar point check out the construction pictures of the new blue streak.The roller coaster still needs some work but is mainly finished.1.new2. new3.old4.old5.old6.old7.old8.old9.old It's finely finished! It still needs some touch ups before I get a video.if you view it post a comment tell me whatch ya think.

Topic by the_burrito_master    |  last reply

How do I construct a maser?

So I have mentioned before about my plans to build a HERF gun using a magnetron powered by a highspeed motor w/ permanent magnets that serves as a generator(it's driven by a minature gas turbine engine). But the issue of collimating the microwaves into a beam that can travel at least 4 miles without significant diffraction is an issue I'm still working on. Now magnetrons have an efficient of roughly 70%.  So here's the idea: The magnetron's output coupling loop(antenna) will be inserted into a highly tempered glass cylinder that is attached to the top of the magnetron and the cylinder will be filled with either hydrogen gas or (anhydrous)ammonia. The oscillating RF field will pump the gas molecules at their microwave region resonant frequencies(if I use ammonia that will mean I need the magnetron to produce peak power at 24 GHz)and stimulate microwave emission by the molecules(population inversion). Has this technique ever been demonstrated experimentally? I know that RF radiation can be used to heat up hydrogen gas into plasma but maybe there are some references to masers constructed in this fashion.

Question by YugZ0h0th    |  last reply

looking for electric bicycle construction plans

I want to build an electric assist bicycle (moped). . . I have most of the parts need (I think) DC Scooter motors, several spare bicycles, welder, 12v car battery, what else do I need and how do I wire it up? What kind of accelerator rheostat do I need? Is one 12V battery enough for 20 miles? should I make it a tricycle? Should I put a deraileur on the motor itself as well as on the rear wheel? how can I keep the pedals and add a motor? whew . . . . tried googleing but all i get are people selling junk i can neither afford or want. I want to "re-MAKE"!

Question by Slartidad    |  last reply

Shotgun design (constructive criticism welcome!)

Alright, this is my new shotgun design.  I have been working on it since I decided to get back into K'nex, however, right now I don't have the pieces to build it, so it will remain a concept for now.  It includes a horizontal magazine that I have designed, a pump, and TD's ram.  The ammo will feed into a mechanism similar to that on the zkar, pushing it upward so that it rests on a pusher which is located right below the barrel.  This pusher is externally connected to the rod in the front and is held in the forward position by a rubber band.  When the pump is pulled back, the ram is cocked, and the loading ram is moves back as well, placing the ammo right below the barrel.  When the pump is pushed forward, it pushes the loading ram forward, loading the ammo into the barrel.   Though this model is not proportionate, I think it accurately gets the idea across, and I was hoping you could give me feedback as to what could be wrong with the design, or you can just feel free to tell me how much you love it.  Eventually I plan on adding a stock that houses a bullpup sling mech, using the guide on the ram to act as a pusher for the rear BTS of the sling gun.   I am pretty sure I can pull this off, but I need the pieces first, so feel free to test this concept out and let me know what you think.  Thanks. -Kinetic  * note in the key it says that the green circles are protruding rods, this is a mistake and the blue circles are actually the protruding rods

Topic by Kinetic    |  last reply

do you have any ideas for a project to do in a construction management class?

I an taking a construction management class in college and it is a pretty boring class even the teacher agrees. He said if we can come up with a project related to construction management we might try it. so if you have any ideas please let me know

Question by vince 09    |  last reply

Lost the "How to Build a Robot/Anything in a Week" write-up in Instructionable - ?

I'll lost the location of the excellant write up on physical robot chassis construction techniques. It included examples of making truss type chassis construction and the bolting (with slots) of flat planel of aluminum together to assemble a robot chassis.

Question by Hegemann    |  last reply

ideas for a 'building/making' round for a pub quiz based on the wild & survival?

I'd have them making fire but i think it would contravene health & safety.....

Question by barbint    |  last reply

What do I need to put a regular wooden door frame into an existing metal glass sliding door frame?

The slider does not work very well at all. I would prefer a regular door.

Question by Okaysure    |  last reply

Eco buildings for free?

I'm organizing a community lead market garden project within Wales (UK) to help those most in need within our community. We have little to no money for this project as almost 90% of the volunteers are unemployed, privet funding for our project is hard to come by  we have only found about £400, so we are intending to use as much recycled stuff as we can. I really need plans for a con and tire or wattle cob storage shed/ shelter for myself and my volunteers to hide out in when the weather turns bad And also some plans for a soda/plastic bottle green house. If you can help please do as i've not done anything like this before!

Question by brambles market garden  

Why isn't plastic used in the construction of houses? Answered

If plastic can be customize to our needs, why can't plastic be customized to be non flammable, UV resistant, non toxic and thermally insulated to be used in house and bulding constructions? Petroleum based plastics are non biodegradable and would last for hundreds of years. Any reason why we do not see more houses built with this versatile product?

Question by blkhawk    |  last reply

need help with LARP weapon design and construction

Hi crafters.  I'm in need of help with constructing a larp weapon, fighting fan, that could open up with a press of a button or pull of a lever N close itself upon releasing it. could any help me with the design of the mechanics n gear system I could use to make it work? It should not be of electronic nature though. Here I attached a drawing of how the weapon should roughly looks like . i'm thinking of using rounded edge aluminium flat bars(looks like flat metal ruler) as the bone for the 'blades'. Really appreciate the help.

Topic by meowgod  

How to construct a programmer for Atmel AT89S52 microcontroller? Answered

I have been trying to construct a ISP Programmer for AT89S52 microcontroller and my previous attempts were not fruitful... So please help me..

Question by batta420    |  last reply

Why no instructables on constructing a Fammables storage box? Answered

I need a box for storing the gas can and other flammables in your garage or shop?

Question by Steveobe    |  last reply

Construction of a robot learning to move in internal rooms

I am looking for a person who knows how to make a robot that will move inside the space, avoid obstacles and create maps of the rooms in which he works?

Topic by finder11    |  last reply

how to construct 5000 AC to DC CONVERTER?

I have 5000 variable AC voltage. i want to convert 5000 volt variable DC voltage. please tell how to convert? and  components requirements ?

Question by selvakumarcns  

How do I construct a pommel horse? Answered

I would like to know how to construct a pommel horse.  Plans on how to do so would be great.  The required materials, instructions, photos would be fantastic as well.  This is for home use only.  Adjustable legs, for height variations would be a bonus and and ability to use is securely on the floor without legs would be nice as well.  I am not particular on the materials, inexpensive, rather affordable would be a bonus. Functionality is whats really important.

Question by Phukitol    |  last reply

What would be the best way to construct a kiln?

I'd like to build a kiln with an interior roughly 8 cubic feet (2' x 2' x 2'). Does anyone have any experience making such a device or have any suggestions on how to do it? If it is only practical to build a smaller one, that's perfectly fine as well. Thanks

Question by Neemund    |  last reply