photo: Polaroid 600/SX-70 => film mod?

I'm wondering if anyone is aware of attempts to use standard process film in a modified Polaroid 600 or One Step type camera... These things are a dime a dozen at Salvo and other such stores -- I'm curious as to an adaptation to, let's say, 120 type film, is possible. Anyone have ideas? The first 600 I just tried to take apart is now in shambles, those puppies do NOT come apart easily that I can tell. Any ideas would be much appreciated. Still attempting to iron out bugs with Kodak Instamatic modification, so far 3 have been murdered in the process.

Posted by peterrabid9 11 years ago


Hf or rf welder

I have some flexible clear vinyl that I've been trying to figure out how to infuse together for a project I want to make.  I've been successful with vinyl glue (after much tests with different glues and epoxies). However chemical bonding can become expensive.  Ive tried many experiments with melting the vinyl together with soldering irons. Either the bond is not strong enough or it melts through, or it weakens the material too much.  I'd be really interested to see someone make an rf or hf welder that is capable of welding heavy gauge vinyl.  Cheers!

Posted by senica 4 years ago


Favorite Bands

What are your favorite bands? 1. MegadetH 2. MettalicA 3. 311 4. Rage Against the machine 5. AudioSlave 6. Iron maiden 7. Black sabbeth 8. Ozzy 9. Black Label society 10.Pantera 11. Slayer 12. Alice in Chains 13.Saxon 14. Dio 15. Joe Satriani 16.Agent Orange 17. Van halen 18. Def lepard 19. Deep purple 20. Dreamtheater AND MANY MANY MORE... If you know like any of these then comment METALHEADS UNITE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Posted by happybirthday 9 years ago


Jetpack-HELP - Gas turbine backpack-Make/Build???

Hi guys busy with an EXPO school project  I'm trying to make a Williams gas turbine backpack but only find dead ends on the net Can someone PLEASE share some info on how to make or build ASAP  Flight time doesn't have to be more than 8-10 seconds but if possible that'll be great !! And lift doesn't heave to be more than 15-20 cm off the ground . Any help is greatly appreciated  THANKS  -IronMan-

Posted by -IronMan- 5 years ago


Fuse Sheet Plastic to Wood

Not long ago, someone was lookin for solution to waterproofin wood box. Can't find it at the moment. Maybe someone else can find that thread. My experiment: Hot clothes iron                          [][][][][] 4 layers paper towel              ------------------                                                   ----------------                                                    ----------------                                                    ------------------- 1 layer wax paper                    ____________ 2 layers clear plastic tarp        ============== Block of 2x4                             [[[[[[[[[[[[[[[[[[[[[[[[[[[[[[] The layers of plastic fused pretty strongly together.  Bond to the wood was moderately weak. This could be done with multiple layers, and only  the lowest layer stapled to wood. Thus achieving strong bond to wood, yet no leak at staples since only 1 layer is punctured.

Posted by Toga_Dan 3 years ago


leg and arm weights

Will someone write up the plans for a HEAVY-DUTY ankle and wrist weight. I have been searching online for a company that will make custom weighted wrist and ankle weights but there aren't any. I'm wanting to make a 50 lb for the arms and 100 lb for the legs. I'm thinking along the lines of several iron or lead bars strapped together with a nylon fiber or other strong material. I've only ever done projects in high-school, where materials were provided, so I don't really know where to get the materials needed. Please help.

Posted by dhill16 6 years ago


Daft Punk Table, DIY Hot Air Soldering Iron, The Best Mop in the World...

Sign-up for our newsletter here. Sept. 20, 2007 Welcome back!We love Halloween so much that we just announced our DIY Halloween 2007 Contest! We're looking forward to seeing all the gruesome entries, but until then, check out these cool projects. How to Create a Lightfish Install LEDs in plastic fish and set them free in water to see some magic happen. Fishing poles included.posted by karlklar on Sep 18, 2007 How to build a Daft Punk Table Replica Bring the disco action to your coffee table with this reproduction of a table that has disappeared from stores.posted by mrgalleta on Sep 5, 2007 How to Make "The Best Mop in the World" Build a mop to last forever with things found around the house. posted by brendanconnal on Sep 16, 2007 This week's newsletter is sponsored byToyota Color Picking 101: It's easier than you think Learn to confidently choose colors for fabric, paint, tile, or any other material. posted by antelucandaisy on Sep 18, 2007 How to make a round thing without a lathe (plus model making tips) Get round and lovely compound curves into your model with simple tools.posted by KaptinScarlet on Sep 13, 2007 Building an Electric Racing Car A small team of school kids built and raced an electric racing car. This is how they did it. posted by rickharris on Sep 16, 2007 25MM Pneumatic Sniper Rifle Why use PVC pipe for plumbing when you can glue it together to form a sniper rifle with a scope that can shoot at over 300 fps?posted by irwinner on Sep 9, 2007 Insanely Hot DIY Hot Air Soldering Iron @ 15 Volts DC and 3.5 amps From the pieces of many electronics a new super soldering tool emerges.posted by OzzyRoo on Sep 18, 2007 Retro DVD Player Transform a beautiful old vintage radio into a slot-loading DVD player. posted by alinke on Sep 20, 2007 How to make a vertical, ergonomic (tie-fighter) keyboard Prevent soreness by keeping your hands in a neutral position while typing.posted by ewilhelm on Sep 14, 2007 Check out all the entries! Halloween Contest 2007! Get a free shirt! Now go build something awesome, and I'll see you next week! -Eric

Posted by lebowski 11 years ago


Circuit Scribe Build Night at E4D Banjarapalya

Greetings, Just like our previous build night with circuit stickers, this build night with circuit scribes was a huge success. Many participants of our rural Banjarapalya Makerspace participated and built cool artistic projects. Although most projects were made on paper, it brought out the amazing creativity of these kids who are mostly first time learners of computer and English. Some projects: Photo sensing iron man face, blinking house, blinking E4D, Light house, Hulk face. We hope to do many more of such build nights in the months to come, introducing our village to some amazing and fun tech.  Cheers

Posted by asinha13 3 years ago


NYC Soldering Championships

Apparently, for all of you in the NYC area, July 29th (next-next tuesday) is the NYC Soldering Championships."With solder irons blazing, and the power of molten metal at their finger tips, New York City's electricity enthusiasts and hardware hackers will connect components to complete circuits for the glory of being the fastest soldering gun in NYC."The end goal is to solder an entire electronics kit (which has not yet been chosen) as fast as possible. Unfortunately, you must be 21 or older to enter.....After the competition, the Ignite NYC talks will begin, several of which seem quite... interesting...For registration and more information, check out NYC Resistor's site.

Posted by T3h_Muffinator 10 years ago


wtf??!!

I just visited some air gun dealers site and i learned that they sell air rifles that can go up to 3000psi! I am making an air rifle that i was gonna pump with a air compressor up to 300psi. :( I thaught that 300psi was much!! Wtf?? I mean 300psi is enough to go trough 18mm plywood. Whats 3000psi gonna do??!! Go through a wall?!! Wtf? :( But is there a way for me to pump to a higher psi?? And a other thing. My air tank was this ABS pipe and i was wondering if you could get ABS pipe out of iron. Can you?? PS: I still havent learned how much fps a 300psi is.

Posted by Enzo55 11 years ago


Laser Harp

Link to buy the plans to make your own (would be cool for the Robot Challenge, i am thinking about it) March 6, 2008 Stephen Hobley saw Jean Michael Jarre play his highly theatrical Laser Harp live 22 years ago and vowed he’d build one just like it. He’s just ironed out the bugs and you can see him play it here. Whatsmore, he has detailed the entire construction process on the Internet. He reckons anyone can build one for under US$600 after purchasing his US$19 Laser Harp Plans and Source Code.

Posted by laminterious 10 years ago


Help with electromagnet

I have made an attempt to make an electromagnet.I got a 10 inch iron rod with insulated copper wire wrapped around (see image)I didnt have enough wire for the whole rod, so the wire is in two seperate sectionsI tried a AA 1.5v battery, two AA 1.5v, a 9v, two 9v and a big 6v plugged in both ways (negative, positive).None seem to work.I thought it may be the two sections connected together, so i tried all the above batteries again on only one section, and it still didnt work.Can anyone help me out here ?

Posted by oxidase 9 years ago


Doors and WIndows Automation

Hello, I am trying to automate the windows and doors in our barn using NEMA  stepper motor and Lead screw and would like to exert around 20 Kg force for opening or closing. The windows are fairly old and made of wrought Iron. I am wondering if somebody can advise and help me selecting the motor (based on torque) and the appropriate diameter of the Lead screw for this instance.  The idea being that when the lead screw rotates, the ball nut flange moves left or right and pushes the connecting rod out or in thus opening or closing the window I have attached a rough sketch what I had in mind and please pardon me for any mistakes. Many Thanks Ash

Posted by AshishJ61 1 year ago


What's your favorite piece of cooking hardware?

Just wondering if anybody out there has one, "couldn't live without" piece of cooking hardware. A favorite gadget or tool that you just couldn't live without. Mine is actually my cast iron skillet I got for my 20th birthday along with a copy of Alton Brown's "I'm Just Here for the Food". I swear I have cooked pretty much every single kind of dish, from breakfast to dessert. I use it at least 5 times a week, and that would probably be a conservative estimate. Anyway, I'd love to hear what kitchen treasures anybody has out there.

Posted by mrrentalshoes 9 years ago


invisible comments

Several family members are now Instructable members so occasionally we like to check and see what each other has said about an Instructable. On every occasions when we go to the Instructable comment section we can not find each other's comments. To double check we swapped member names and passwords but as feared we could only see the comments for the member names we were logged under. Ironically we can see all (?) comments by other members. I logged this as a bug and sent several emails to info@instructables.com but nothing, no response and no reply. Has anyone else experienced this trouble or have any idea of the cause?

Posted by thinkahead 10 years ago


Steam radiator made of copper pipe?

I have an old house that uses steam heat and has big, single-pipe, cast-iron steam radiators.  I wanted to replace one of them with something modern looking, and one company sells such radiators, but they are very expensive (sold here http://steamradiators.com/) My question is, can I make one of these  out of large (1.5" or so) diameter copper pipes, soldered together in the same fashion?  I've read that steam systems typically operate at 1psi of pressure, which sounds like it's well below the safety limit of copper pipes and solder joints. I think it would look fantastic, but would it work?

Posted by mhj555 8 years ago


Happy Hallowe'en!

Hallowe'en has started in the UK, and, as the night progresses, the trick-or-treaters are getting older and and uglier - around dusk, we get the fairies and wizards who need their parents to reach the doorbell, as it gets later, we get the small gangs of friends, later it will be the teens who are pretending they are trick-or-treating ironically, but really they like the candy just as much... A new twist this year - our candy has small sticky rubber rats and spiders mixed in, or you might get a plastic skull-ring around the stick of a lollypop. As the darkness reaches your part of the globe, tell us; what's the best or weirdest costume you've had to your door this year?  Got to go, there's the doorbell again!

Posted by Kiteman 5 years ago


Melting silver to repair jewellery

Hello everyone, Iam a disabled pensioner living in Australia. I have a few pieces of silver jewellery where links have opened, and require "soldering". A jeweller has quoted me $40 each repair. I have a 3 inch square of silver sheet left over from a jewellery course I took years ago, and want my husband to melt it on the links for me. He has tried a hand held soldering iron and also a blow torch, neither worked. Please can someone advise us what else to try ? They are only minor melts required, but we cant make the silver molten in our garage. Many thanks

Posted by Charmy666 5 years ago


(newsletter) Air Hockey Table, Bacon Candy, Branding Iron...

Sign-up for this newsletter: Welcome back! Converse Back to School in Style Contest - Make or customize anything school-related and win a gift card so you can make your own Converse shoes! SINGER Kids Crafts Contest - Create something crafty with or for a kid and win a sweet new serger or sewing machine from SINGER! Forbes Teach Me Fast Contest - Make a 30-second how-to video and win an awesome Flip MinoHD video camera! Winning videos will be featured on Forbes.com. Gorilla Glue Cardboard Contest - Build anything using cardboard, and win a huge package of Gorilla Glue supplies and gear! ENDS SUNDAY: Low & Slow BBQ Contest - Cook up something tasty and win a Weber Smokey Mountain Cooker, and autographed copies of the new Low & Slow BBQ book! Contest closes August 23. Winners announced for the Art of Sound Contest. See who won! DIY Air Hockey Table Build Fantastic 3D Art with Cardboard See who won! Bacon Candy Submit a cardboard creation and win a prize pack from Gorilla Glue! Cook up something tasty today! Ends this Sunday! Extreme Fat Tire Bicycle Foam Walkalong Glider Make Wine Jelly Cheap SD card Breadboard Socket Make or customize anything school-related! Improve Your Videos! Automated Cat Feeder Build a 8x8x8 LED Cube Denim iPhone Case Share something cool quickly! Get crafty! Cheapest Wire Holder Branding Iron Make a Cardboard Laptop Stand Panties Sign-up for this newsletter:

Posted by fungus amungus 9 years ago


Should i remake my p90 and make it even better?

Well i was thinking about remaking my p90. i tried it before, and that version took a turn for the worst. if i remake it, it will have as much detail as the real one, and also have some attachments. also if you guys have any ideas to help me with it, just tell me, or you could make a part of the gun if i get stuck making it and i will add you as a collaborator on the instructable. if i get alot of people who want me to remake it, i will. (the picture below is the p90 im thinking of making, a rail would be better for attachments instead of having a red dot or iron sights only)

Posted by ~KGB~ 8 years ago


Copper tape for thermal concentration

Has anyone ever used copper tape to concentrate heat on an object to obtain a uniform higher temperature?   I've been doing some studies in the recent past that suggest polished copper foil is a good reflector of infrared energy. It is not as good as silver, but I don't think it would go over well to use silver in any sort of oven or kiln.  I used to think good ole aluminum foil was good for heat, but it turns out it is only good for stopping heat.  I've thought of using the instructable on the waffle iron or make one by way of a bread toaster, but will most likely not be able to go through with it.  The copper foil is the same type found at stained glass craft shops. 

Posted by jmikronis 5 years ago


3D printing and CNC materials question

Hi there! What common material is best for off-the shelf rigid rods/bars for things like 3D printers and CNC machines? I'm actually thinking about making a 3d pantograph for expansion/reduction of originals sculpted in epoxy, (perhaps to be added/linked with a print/machining rig later. I see a lot of what seems to be steel tube or rod in people's projects, but steel is bouncy. Is there a particular cast or extruded alloy of steel or aluminum? Cast iron? Bronze or brass? I don't have a machine shop or a lot of money, so I have to use stock material or salvage, and I'm not so sanguine about salvage for this most critical element of the machine. Any thoughts? Thanks!

Posted by eruger 3 years ago


Matt finish Tshirt Prints

Well, I know there are a bunch of tuts out there teaching you how to make your own personalized tshirts but what im looking for specifically is how do i make Permanant, Matte finish tshirts? i gave up doing stencils.. there just too hard to make ...i used to buy iron on prints but they give of a glossy finish.. cant find a matte finish :(all i have is a sucky inkjet printer thats 4 years old.. i get the feeling its gonna break soon..soo.. looking for a way to print stuff like this :http://i19.tinypic.com/8ea56hz.jpghttp://i4.tinypic.com/6xjq8hj.jpgwith a matte finish.. and it must be permanant.. with wahtever medium excpet spraypaints...

Posted by xaeroevo 10 years ago


Custom Minecraft Wall Torch

Hello all. This is my first time here so, I hope I can find the info I need. I've never used a soldering iron before and know little about wiring, but I'm eager to learn. I'm looking to customize an electronic Mainecraft wall torch that I have, with a flickering light. However, I wanted to come here first to see if anyone has opened one of these up before. I was planing on using a flickering light from one of those electric candles. I'm not sure if it's as simple as switching out the LED or if I have to rip more parts from the candle. I appreciate any help you can give. Thanks

Posted by OX_Bigly 4 years ago


Recycling Soda Bottles Experiments

Test 1: heat gun, "high setting"  Plastic Coke bottle SOFTENS + shrinks                                                                  -  at about 250F * Test 2: Heat gun " low setting** " Plastic coke bottle MELTS enough to  make gooey threads , and bubbles   -   at 450 to 500 F *according to a cheapy harborfreight laser thermometer. Not sure just how accurate it is in the 250  to 500F range. This device seems to read 5 degrees high at the 100F range. ** ironically, the temp is higher on the "low" setting. When the fan is moving less air, that air is hotter. One of the tricks, I imagine, might be to fully melt the plastic without burning it.   Suggestions welcome. Further results will follow.

Posted by Toga_Dan 4 years ago


Share a photo of you in your happy (making) place!

I was in my garage the other night creating a big mess and a lot of noise, when I looked down and realized I was covered with sawdust and wood shavings. My immediate thought was, "This is my happy place!" . . . and I decided to snap a photo.  Got a photo of you in your happy (making) place? Whether you're surrounded by yards of fabric, hands covered in clay, whipping up something tasty, soldering iron in hand . . . we'd love to see some photos of you doing what you love--making stuff! I've got some pro memberships to give away, and maybe even a few robot t-shirts!  This is a standing offer. Share a comment and a photo below!

Posted by seamster 3 years ago


LED wiring and soldering help needed

Hey everyone! New to the forum here but not to instructables. For quite a while i've been looking into making an iron man arc reactor. I've learned how to wire and solder regular LED's but i am at a loss for how to wire and solder surface mount LED's. I've tried searching and googling for some answers but i haven't really come up with much. Can anyone help me out? Oh and a bonus question for not only surface mount, but also regular LED's. I know how to hook up one LED to a battery pack...but what about hooking up multiple ones? Thanks for any help! I appreciate it!

Posted by AmandaGbur 8 years ago


Inkless printer- Laser or Heat to engrave Paper

Hello,I am currently searching for projects that print on paper using heat, lasers or other inkless technology. The problem I ran into is that a search for burn, laser and thermal in combination with printer and paper allways brings many results that are irrelevant (laser printers, thermal transfer printers and such).What I did find is http://www.flickr.com/photos/jabella/438212343/in/set-72157600033633262/ for example. Though commercial laser solutions seem a bit "too much" and overpriced to plot a bit on paper.Does anyone here have any links to projects that use heat or other methods to print on paper?I guess it could be as simple as a plotter using a weak soldering iron ;-)

Posted by schorhr 11 years ago


WHAT GIVES WHERES MY FLOPPY THREAD?!?

Sorry folks looks like the server screwed up my posting and i'll have to post my idea for home brewed 5.25in floppies all over again (the post eventually appeared several hours later so i deleted it) ok so where to start (*light bulb appears over head*) i got it if you have a 5.25in floppy get it out and look at it you'll notice that its pretty simple the first part you will notice is the plastic envelope enclosure thing which is just a single piece of folded plastic with some holes cut in it, just below the surface of the enclosure is a fabric or paper dust trap that keeps the disk debris free and finally comes the hard part the disk each disk has 3 components the iron oxide powder, the disk, and the binding glue stuff the holds the powder to the disk. now here is my crude theoretical unproven construction process 1. cut out the enclosure(i'm thinking a material like plastic card stock might work) (probable impossible by hand put it under a laser cutter or watter jet if you have one) 2.use 8 dabs of glue to glue the dust trap in place on the side of the enclosure that will come in contact with the disk 3.spray some adhesive onto the disk and bury it in iron oxide powder 4.remove the excess powder and spray it again with adhesive 5.carefully put the disk in the enclosure and fold the enclosure around it gluing the enclosure shut 6.stick it in your floppy drive and format it i'll have time to try this myself this summer until then feel free the criticize and question my sanity just PLEASE don't suggest buying disks from e-bay, thrift stores, flee markets, online, or any where else for that matter

Posted by clasic_traveller_diehard 10 years ago


British Land Speed Recod Was a Breeze, Thrashes US Record.

On the morning of March 26th, on the dry Lake Ivanpah, The Ecotricity Greenbird driven by British engineer, Richard Jenkins smashed the world land speed record for wind powered vehicles. The Greenbird clocked 126.1 mph (202.9 km/h) , eclipsing the old, American held, record of 116 mph , set by Bob Schumacher in the Iron Duck in March 1999 at the same location.The fully-composite craft (the only metal is in some of the bearings) used a solid wing to reach speeds up to five times that of the actual wind.The wing also provides unwanted lift, so it uses the same downthrust technology as F1 cars - at speed, the 600kg car presses down on the salt-flats with a force of almost 10,000N.Greenbird website.

Posted by Kiteman 9 years ago


Gift contest thingy

My skills include: Props, delicate work What I'd like to make for someone: Iron man phone(already made), you can see it here and it will be sent to someone I'd be willing to make this size gift package for someone: small, medium I'd be willing to receive a smaller or larger size gift package from someone than the one I make for someone else: small, medium What I like: anything? What I don't like: nothing? I absolutely can't have: nothing? Type of thing I'd love to receive: anything Would you be willing to ship to an address outside your own country? Yes m that are at least 18 years old or, if not, that you have the approval of a parent or guardian? Yes, I have approval

Posted by makerboy112 8 years ago


Basic Oodammo Rifle Prototype 2.5 *With some internal pics*

(Update 2.5) I cannot be bothered anymore to put anything else on this gun, so anyone who wants to build this gun form the pics, they are allowed to build and post the mods as long as they credit me.  The current stats as it stands: * Range = 40ft with one # 64 band * Powerful * Very easy to use * High ROF * Can be easily adapted for left handed shooters (just build it like the V1 with the panel on the other side) * Fairly reliable with the mags * Handle connection is very strong unless you try to break it deliberately (which means it wont come unattached in wars) * Iron sights are accurate to about 25 to 30ft There are now pics of some internals at the end. Enjoy building and modding if you do decide to do that. 

Posted by beanieostrich 6 years ago


For Star

I want to do something for star...as you know, she was arrested for having a "fake bomb" hoodie. Read more here.The problem is that we all live so far apart, we can't have any sort of protest, like was had for the tazed kid at UF. I'm trying to think of things we could do to show our support that doesn't require mass gatherings. So one idea that came to mind was having the front be a picture like what she had on hers, and on the back, some kind of a message. Do you like that idea? Do you have any others? Just like..discuss, and we can try and find the best thing to do. If we do decide to make shirts (iron on paper) maybe we could all wear them monday, or something?

Posted by Weissensteinburg 11 years ago


How Do You Make a Slide Show Viewable?

Ok, I made a slide show and I published it. The problem is, the only way you can view it is if you go to my page and click on the picture. You can't just search it in the box and it'll come up on one of the pages. Example: You make a slide show called "Iron man haloween costume." If you search it in the box in the top right corner of the screen. It wont come up in the "search results." The only way you can view it is if you go to the authors account page and click on the image/link to it. End of example. Now how do you make it able to view if you search it in the box. Is it the license has to be a certain type or what do you have to do. Please help and reply with an answer. Many thanks, Chill88

Posted by chill88 9 years ago


Copy Cats

There are many of you out there that have clones, I came across several of them today.I am making a big fuss over this because it annoys me, that people can't think of original names; so they have to copy other people, because they are popular.Often you will find, or may well have seen, these 'fakes' have posted Instructables, but the original person has posted a gun, more than five times better than that of said cheat.The few I have found so far include:Trainman2001 - DarthTrainmanDsman1 - Dsman195276 (or visa versa)Killerk2, NOT-KILLERK - KILLERKThere are thousands for ironman69, although there was a film called The iron man - This could be a valid reason.If you spot any other clones, inform me please.I will eat them.

Posted by j-chode! 10 years ago


I need some PCB help

I'm trying to help a friend make a PCB for a project of his, but I've never made one myself. Using westfw's design rules in Eagle Free Edition, the board is riddled with jumpers, but there are only three with the default-width traces. I ask you, O wise Instructables community, what should I do?We were going to use the iron-on laser printer resist method, but that won't work if it is too sloppy to make thin traces. How thin can the traces be made with this method for a beginner? We also are considering using this film, in hopes that it will be a little easier to use...does anyone have experience with it?The other option that comes to mind is transferring everything to ExpressPCB instead of Eagle, in an attempt to make a bigger board that could use bigger traces.

Posted by CameronSS 9 years ago


Sound activated switch

Hey, my friend is a drummer and he's trying to install LEDs inside each one of his toms that would come on when he hits the tom. He doesn't know anything about electronics so he asked me and I don't know much either so I'm asking all you awesome people at Instructables. What I want is a simple sircuit that will not cost me above £5 that will allow me to do what I mentioned above. I have a soldering iron and can solder stuff easily so I just need the parts and (preferably a stripboard) layout. He will be using a max of 16 red 2v 20mA LEDs in each tom so the circuit will have to be able to supply either approx. 32v 20mA if in series, or 2v 320mA if in pararell. So, any recommendations?

Posted by kacper00100 8 years ago


knex trebuchet

I have made a knex trebuchet which is about 3 feet in length and 2 ft in height. The frame is strong. It can fire quite far but I'll get measurements tomorrow It can fire anything that fill fit unfortunately it doesn't use weights as a power source due to having nothing that could be heavy enough to fire it so, I put loads of rubber bands on it. its fire using string which is attached to the projectile and the other end of the string is connected to the arm which when is up right the string detaches and the projectile is released. At the moment is can fire about 20ft and gets loads of air time. about posting this: I will test it tomorrow and iron out any problems and make it perform better. after all of that I will post it. my thoughts: I think this is the best trebuchet to be posted :)

Posted by smidge147 10 years ago


Is it safe to use a microwave for small aluminum melts?

Seeing as how I have a spare microwave, and I've heard of people doing melts in a household microwave, I though that I'd try it myself.What do I need to add so that I don't destroy the microwave?"From a hardware store on Fourth Street, I bought a silicon carbide sharpening stone and 3 pounds of tin/silver plumber's solder; from Macy's, I purchased a microwave-safe casserole dish and a stainless-steel measuring cup; and at Williams-Sonoma, I found a cute cast-iron cornbread fish mold and a pair of long-cuff leather grilling gloves. " - PopSci's Theo GrayA good source of silicon carbide? A better material? (I don't even understand its purpose here).

Posted by carbon 11 years ago


Aluminium casting

Hi Can anyone help this old codger trying his first casting please. What I am trying to make is an aluminium block, 150mm square by 52mm thick with a 100mm hole in the centre, hopefully with a decent finish as I am short on finishing equipment. I am planning to weld angle iron into a square to make the sides, use a section of 100mm steel tube for the centre hole and tack weld them onto a steel plate to make the mould. I also want to fill the tube to make a disc. Does this this sound feasible please, also will the aluminium, as it shrink as it cools, get stressed by the centre steel tube. When I have poured the aluminimium into the moulds, do I slide a scraper across the top to get a reasonable finish. Many thanks Keith

Posted by axus4 10 years ago


UPDATED: Today I was totally GROSSED OUT....Plus pics, and progress !

The landlord came today to "fix the walls" again, like he did a few months ago, and again 3 days ago....but his helper told him this wasn't working...so they started tearing the Bathroom and Bedroom wall (the adjoining wall) down.  The portion towards the outside wall of the building.....they found a pipe that was leaking....a big 9 or 10 inch iron pipe......guess what?   That is the drain from upstairs for the bathroom sink, the bath tub, and the TOILET.   For over 6 months now, we have had our bedroom wall deteriorating and being soaked by SEWAGE.... The helper told me in confidence that we are not the only ones he does this too.....grrrrrrrr. Pictures have been updated with ones I took...      

Posted by Goodhart 8 years ago


My Laser Sailboat!

Well, as not very many of you, my family owns a sailboat - a one man racing sailboat called a Laser. I just thought I'd show it to you guys. Its a blast to ride, you can go very fast, all at no cost to the environment! Hope you enjoy it. IaC 1: Rocking it pretty fast. The boom smashing through the water is slowing me down a bit though. 2: I got caught in irons on a bad tack here, the wind was really going too. 3: Dry roll time! When the boat flips, you can hop over the side and stand on the daggarboard to right it. f you do it right, you wont even get wet. 4: Cruising on a broad reach. Good times!

Posted by I_am_Canadian 9 years ago


Running LED's with a wall outlet

I have a question, I am thinking of making a Pepakura Iron Man mask for my father for his desk at work.  I have big plans for this, but the biggest thing I want to do is had the Eyes light up.  What all would i need to do this?  I would think using LED's would be the ideal way to go.  I dont really want to use batteries to power it, as I would like it to run off of a wall plug, and perhaps even have a switch to power on and off. Any ideas?  I've looked all over, and I cant really find a deffinate way/means to power it through an outlet....most all just mention batteries.  I know it can be done though :) Any help is GREATLY appreciated!

Posted by electrobrandino 7 years ago


Drones, not just for spying

So with the advance of 3d printing, arduino firmware, Raspberry pi, and the general open source approach to making things in the last 15 or so years, it's really not that surprising that drones have become as wide spread as they are. Those not interested in drones view them mostly as either a hobby or a potential threat to their privacy, but I had an idea the other day that might push them into better prominence.   What if drones could be used for construction and basic maintenance?  What if a quad copter was the thing that was wiping down the windows of a skyscraper?  Or messing with dangerous high power electrical lines.... Things that are both tedious because they have to be done over and over again, and that are moderately dangerous for a human being to perform.  Why can't a drone be used for some of that, and can one be designed around those constraints?  This is how a hobby user could make innovations that might curtail some of legal and general paranoia surrounding drones.  This is all well and good, but let's take this a step further: Drones are a necessary part of human exploration.  People talk about putting humans on Mars.  Human beings require inputs. Food, shelter, air.... those sorta things.  If there's a problem with one of those things on Mars, there has to be a way to fix that, and it's probably best if it's something that's established before those humans get there.  Drones could be used to do a variety of tasks, and possibly even establish small caches of water or maybe even limited quantities of iron. Maybe even something like a 3d printed iron shelter.... (Induction heating works by pulsing a electromagnetic coil with high frequency electricity, which can be used to melt magnetic metals with high degrees of efficiency. This could be used to make low grade steel on mars, but if time and scarcity of resources aren't constraints... it would work.) Anyway... I was just sort thinking about this stuff. Let me know what y'all think

Posted by Qcks 3 years ago


clean way to catch flies in the house

Hi i hope this is the right place;  I just found a somewhat clean way to get rid of flies in the house, spray them with spray starch (for ironing clothes) and they will slow down so they can be caught and put outside, or use paper to pick up and remove them. I had spray starch in the kitchen and the weather changed here, its humid and suddenly there are flies in the house.  i dont like to swat them and leave that to clean up;  by chance i used the starch, it took some effort to target them but it worked.  i did this last nite, today the 2 i sprayed apparently shook it off were not hurt, so anyone who wouldnt want to hurt a fly could spray them with starch, put them out and there is no  mess to clean and nature can do what nature does.

Posted by rogersbr 3 years ago


Will this electric generator idea work?

Will this work? A wheel that has neodymium magnets and coil of wire around iron, basically an electromagnetic. next to the wheel is a coil of wire that generates elctricity when the wheel turns, this coil conveys the electricity to the electromagnet through means of copper brushes. On the other side of the wheel is a coil of wire which gets electricity to power things. In my head, id say that the magnet powers the 1st coil then the 1st coil powers the electromagnet which also powers the 1st coil which powers the electromagnet even more. So in my theory, the electromagnetic gets infinitely powerful (till it burns out). So in a way the wheel can be cranked by hand and yet the 2nd coil will get a large amount of energy. Will this work in real life? why or why not? If this idea already exists what is the name?

Posted by alester333 9 years ago


Any Sydney-ers here want to share art/craft/tinkering shopping spots?

I'm trying to compile a list of rather disparate resources that can be found in Sydney: hobby shops, art stores, gadget-component stores, etc. I'm looking for places that carry specialized or uncommon items like: Electronics parts (switches, capacitors, etc) Jeweler's size tri-wing screwdriver Loupe Small calipers Glass etching paste Soapstone Pencil torch Low-cost soldering iron (i.e. one that's not meant to be used often) Half-hard sterling wire Carbon fiber rods & others (I'm sure people who are more familiar with different crafts will be able to list tools/materials unique to their area, and I might as well try and collect a broad range of sources.) & Yes, I have looked online.

Posted by ryzellon 11 years ago


Toxic Magnet Wire?

I know I'm probably going to sound like an idiot for asking, but can magnet wire release any toxic fumes when heated? I made a speaker using a magnet-wire coil and a neo-magnet, and when I plug it into the amp, I realized the coil gets very hot. I was expecting this, for I've used a number of coils in other projects. There is an odor, no doubt, that comes from every coil I've used when making an electromagnet. Sure, the smell may come from the iron nail being heated, but I always associate the smell with the coil. I'm not willing to smell this speaker, however. So, is there any risks that come from the heating of magnet wire? The coil gets hot after about a minute of run-time, but I'd like to be able to run through an entire album of music (an hour?) if possible. Thanks!

Posted by freethetech 7 years ago


How can i fit a 3.5" hard drive in a 5.25" bay?

I want to fit my external hard drive in a 5.25" bay, as USB is too slow and i don't have another 3.5" bay. Things i have: 1. Samsung Spinpoint F1 1TB. (the hard drive i want to move) 2. Sweex 3.5" external case, it sucks... 3. An old cd-drive. 4. Basic tools, no soldering iron. 5. an old pc i can steal parts from. Now my question, how do i make sure that thing stays into place, and, is it a problem if it doesn't have some kind of suspension? My pc is a compaq presario from 2008, which has 3 free 5.25" bays. I already looked on google and searched instructables, but can't find anything usefull. Thanks in advance, DJBD

Posted by DJBD 9 years ago


New PDF Layouts on the way

Hi all, Just a quick heads up for pro members: in our continuing efforts this year to add value to pro memberships, we're releasing changes shortly that should make the PDF downloads much simpler to download, and much more attractive and readable once you do. They feature two-column layout for more readable text, and accommodate much more of the formatting that makes each Instructable unique. To begin with, these new PDF layouts will only appear for newly generated PDFs. As we receive your feedback on them and iron out any kinks, we'll expand to include more projects, replacing the old PDF layouts over time. Big changes like this always come with some unpredictable parts, so if you notice anything that's a little off, please let us know! ~Devs

Posted by pseaton 2 years ago