If your shop is anything like mine, you’ve got a large selection of colorful cans claiming to contain the best and absolutely only lubricant you’ll ever need. I’ve been sucked in by the marketing more times than I care to admit, hoping that the next product will really set itself apart from the others and magically unstick all the stuck stuff in my mechanical life. It never happens, though, and in the end I generally find myself reaching for the familiar blue and yellow can of WD-40 for just about every job.
So it’s Saturday morning and you’ve found yourself with an urge to build something involving copper plates or carbon electrodes. Maybe you need a metallic powder for a chemistry experiment. Casting supplies? Pure lead? Copper mesh? Silver wire? Odd tools? Exceedingly caustic etchants? There’s a store that sells it all, and it’s not usually frequented by hackers: the art store.
If you know where to look, the store is full of useful things. Each method of expression in art has its own set of supplies; a bountiful collection of various processes and the useful things therein. I grew up in a city that did not have a real art supply store. It had one of those big box craft stores that assault you with glittery plasticized flowers and terrible manufactured scents. When I moved to a different city and walked over to the local art supply to purchase some new pens I ended up staying for a few hours just looking at all the cool things they had for sale.
One of the easiest ways to make PC boards at home is to use the toner transfer method. The idea is simple: print the artwork using a laser printer and then use a clothes iron to transfer the toner from the paper to a clean copper clad board. The toner is essentially plastic, so it will melt and stick to the board, and it will also resist etchant.
There are several things you can do to make things easier. The first is the choice of paper. However, the other highly variable part of the process is the clothes iron. You have to arrange for the right amount of heat and pressure. If you don’t do a lot of boards, you’ll probably have to make several passes at getting this right, scrubbing the reject boards with acetone and scouring pads to clean them again.
[Igor] had enough of the clothes iron and knew that other people have used lamination machines to get the toner off the paper and on the blank board. He started with a commercial laminator but hacked it for PID control of the temperature and made other improvements.
These are things of beauty, and when in flight, the Tie Fighter Quadcopters look even better because the spinning blades become nearly transparent. Most of the Star Wars-themed quadcopter hacks we’ve seen are complicated builds that we know you’re not even going to try. But [Cuddle Burrito’s] creations are for every hacker in so many different ways.
First off, he’s starting with very small commodity quadcopters that are cheap (and legal) for anyone to own and fly. Both are variations of the Hubsan X4; the H107C and the H107L. The stock arms of these quadcopters extend from the center of the chassis, but that needs to change for TFFF (Tie Fighter Form Factor). The solution is of course 3D Printing. The designs have been published for both models and should be rather simple to print.
ABS is used as the print medium, which makes assembly easy using a slurry of acetone and ABS to weld the seams together. Motor wires need to be extended and routed through the printed arms, but otherwise you don’t need anything else. Even the original screws are reused in this design. Check out test flights in the video after the break As for the more custom builds we mentioned, there’s the Drone-enium Falcon.
One of the most popular methods of homebrew PCB fabrication is the toner transfer process. Compared to UV-sensitive films and CNC mills, the toner transfer process is fantastically simple and only requires a laser printer. Being simple doesn’t mean it’s easy, though, and successful toner transfer depends on melting the toner to transfer it from a piece of paper to a copper clad board.
This is heatless toner transfer for PCB fabrication. Instead of using a clothes iron or laminator to transfer toner from a paper to board, [simpletronic] is doing it chemically using acetone and alcohol.
Acetone usually dissolves laser printer toner, and while this is useful for transferring a PCB from paper to board, it alone is insufficient. By using a mixture of eight parts alcohol to three parts acetone, [simpletronic] can make the toner on a piece of paper stick, but not enough to dissolve the toner or make it blur.
From there, it’s a simple matter of putting a piece of paper down on copper clad board. After waiting a few minutes, the paper peels off revealing perfectly transferred board art. All the usual etching techniques can be used to remove copper and fabricate a PCB.
This is an entirely novel method of PCB fabrication, but it’s not exactly original. A few days ago, we saw a very similar method of transferring laser printed graphics to cloth, wood, and metal. While these are probably independent discoveries, it is great evidence there are still new techniques and new ways of doing things left to be discovered.
Thanks [fridgefire] for the tip.
Just in time for the movie of the decade, [Allen] from [Sufficiently Advanced] has built a real working fire-based light saber. And it’s awesome.
He started out with a replica light saber and designed his own 3D printed enclosure to house a small tank with a syringe valve that goes inside the handle. This allows him to fuel it with a mixture of methanol and acetone, using butane as a propellant. He learned how to do this from [Tesla Down Under], who has some fantastic projects — most notably, flamethrowers.
A nichrome coil provides ignition for the flame, and after he got the pressure just right, it produces a pretty awesome, albeit skinny, flame-saber.
If you don’t have a Raspberry Pi Zero right now, you’re not getting one for Christmas. Who would have thought a $5 Linux computer would have been popular, huh? If you’re looking for a new microcontroller platform you can actually buy, the Arduino / Genuino 101 is available in stores. This was released a few months ago, but it still looks pretty cool: DSP, BTLE, and a six-axis sensor.
If you don’t know [David], the Swede, you should. He’s the guy that launched a glider from a high altitude balloon and is one of the biggest advocates of tricopters. Now he bought an airplane wing for his front yard. It was an old Swedish air force transport aircraft being broken up for scrap. Simply awesome.
Chocolate chips. Now that the most obvious pun is out of the way, here’s how you make DIP8 cookie cutters.
[Barb] is over at the Crash Space hackerspace in LA, and she has a YouTube channel that goes over all her creations. This week, it’s a layered wood pendant constructed out of many layers of veneer. Take note of the 3M 77 spray glue used for the lamination and the super glue used as a clear, hard finish.
Star Wars was released and we have a few people digging through the repertoire to see what [John Williams] lifted for the new movie. Here’s musical Tesla coils playing the theme for the Force.
Flickr gives you a full gigabyte of storage, but only if you upload JPEGs, GIFs, and PNGs. That doesn’t prevent you from using Flickr as your own cloud storage.
We know two things about [Hans Fouche]: he lives in South Africa and he has a gigantic 3D printer. His latest creation is an acoustic guitar. It may not sound great, but that’s the quality of the recording. It may not play great, but he can fix that with some acetone vapor. It would be very interesting to see 3D printing used in a more traditional lutherie context; this printer could easily print molds and possibly even something to bend plywood tops.
Starting in 1990, [deater] would make a yearly Christmas-themed demo on his DOS box. You can really see the progression of technology starting with ANSI art trees written in BASIC, to an EGA graphical demo written with QBASIC to the last demo in 96 made with VGA, and SoundBlaster effects written in Turbo Pascal and asm.