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22368Re: [beam] I made a promise, and I have kept it.

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  • Richard Piotter
    Feb 3, 2002
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      Any 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
      > stamp.
      >
      > 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?
      >
      > Yar!
      >
      > 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!
      > Jesse
      > osmodiar@...
      >
      >
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      >
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      --

      Richfiles
      richfiles@...
      http://richfiles.calc.org
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