22368Re: [beam] I made a promise, and I have kept it.
- Feb 3, 2002Any pictures of the finished projects/stamps. That idea is so great!
Jesse Willis wrote:
> About a week or so ago I made mention to a new method for creating PCBs in
> the comfort of your own home which I promised to share with you upon
> returning to Tech. Well, I'm going to make good on my promise now, because
> I have had time to test my method and have found that the results are quite
> promising. The final product is also about 10 times better and cleaner than
> using my Blender Pen method, although it does require a bit more set up time
> to produce the first PCB.
> Bear in mind, this is intended to be used for making many many copies of a
> PCB, for experimentation or other usage. :) Feel free to use this
> technique to sell PCB's to people if you do a particularly good job. Oh
> yeah, first I'll tell you what the method is, and then I'll tell you the
> long boring story of coming up with the idea. You will be making a rubber
> Go to a craft store and buy a few of the biggest NON-GUM STYLE rubber eraser
> you can possibly find. Then look for linoleum cutting tools. If you don't
> know what these are, ask a worker - they will be able to help you. Chances
> are, you probably had to do linoleum cutting in art class in junior high. I
> did, (it sucked) which is why I thought of these. You will probably want a
> very very very small size cutter, preferably in the V shape for making fine
> cuts, as well as a U shaped cutter for making long wide trenches. Once
> you've got this, find yourself a decent waterproof, non-smearing, acid-free
> black ink pad. (I use 'Archival Ink Jet Black'. It's the expensive kind,
> but it is worth it.)
> There ya go! You now have the pieces you need to make a splendid rubber
> stamp of whatever circuit you would like. It takes a bit of practice to
> carve the stamp just right, so don't get disheartened if it takes a few
> go's. This method is great if you want to make many many robots, or wish to
> sell PCB's. Also, if you screw up soldering stuff to one of the PCB's, just
> make a new one.
> Some wisdom :
> Be gentle when stamping the PCB. You don't want to slide the stamp
> around or it will blur the image.
> For making drill holes you can use the following method:
> Large holes: Just take the drill bit and, using your fingers, drill
> a hole in the stamp.
> Small holes: Take a .7 (NOT A .5!!!) mechanical pencil and gently
> poke the lead into the stamp a few times. If done properly, you will get a
> perfect drill hole on the finished PCB.
> Wondering where in the heck this idea came from?
> Okay, so I'm doing my little brainstorm thing one day, trying to devise new
> and better ways to mass produce PCB for my temporarily defunct
> robo-corporation, when suddenly (I.E., like lightning) a thought pounded
> into my brain: What about making a stamp?
> Realizing that this idea just might work, I set about trying to find
> anything I possibly could to make a decent stamp. I tried clay, foam, wood,
> etc., but nothing seemed to work. I knew that making a rubber stamp would
> be almost ideal, but I also knew that it was cost prohibitive to have a
> rubber stamp professionally made. There had to be an alternative...
> Imagine my chagrin one day when my -mother- (the artsy craftsy type) dragged
> me into a Ben Franklin's Crafts store one day, and then as we walked around
> suddenly threw a rubber eraser at me and asked: "Will this work?" I
> should've just killed myself right there in the store, because I invent
> things for fun (like a little umbrella that attaches to your dog's harness
> so you can walk him in the rain, or a solar bicore head based sensor which
> attaches to your Venetian Blinds and automagically opens and closes them to
> let the maximum amount of sunlight in all day long) and my mom beat me to it
> for once. (By the way, I have -tons- of these inventions... Maybe one day
> I'll tell you about them.)
> Okay, so now I'm on a mission. What can I use to carve this? Hah!
> Linoleum cutting tools will work splendidly. As you read above, V and U
> shapes work the best. I also snagged a really cool X-Acto knife with a tiny
> tip and swiveling blade, but this is only for very very fine work, and is
> almost impossible to use.
> Total cost should be less than 10 dollars. 4 bux for the stamp pad, 2 bux
> for each linoleum cutter, and 1 dollar for the rubber erasers.
> Yes, before you go asking me, I have made several of these stamps,
> mostly -derived- from the designs on the BEAM Online website (because they
> are so compact). No, I will probably not be selling PCB unless people
> started beating down my door for it, as well as paying in advance. :) And
> if Eric Seale is reading this, feel free to put this one in your Beam From
> the Ground Up page, too!!! :D
> Gotta go, the caffeine in my system is starting to wear off!
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