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Aluminum Tape

Discussion in 'Electronic Basics' started by phaeton, May 4, 2007.

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  1. phaeton

    phaeton Guest

    Hi.

    I recently had to purchase a roll of Aluminum Chimney Tape to fix a
    hot water heater exhaust. All in all, I needed about a foot or so of
    tape, but the smallest roll I could find anywhere was a ridiculous 95
    feet.

    So I've made a few quick-n-dirty heat sinks for some low-watt
    chipamps. I RF shielded an enclosure for an audio device. Could
    probably do that to a couple of guitars, etc. I spose I could make
    some awful circuit boards by sticking it to pressboard, and cutting
    out some traces with an exacto-type knife. Any other uses for this?

    I could grab some wax paper and make some crude capacitors. With a
    little more work I could even make them variable capacitors. Anyone
    have a surface-area-to-farad scale or conversion?

    Hurray!
     
  2. Rich Grise

    Rich Grise Guest

    I'm sorry to burst your bubble, but none of those ideas will work very
    well, because it's so hard to electrically connect to aluminum reliably.

    And the stickum is probably a relatively good electrical insulator.

    Now, if you wanted to do a science fair project, then if you could
    figure out a way to make a good connection to the aluminum, you could
    take that roll and another roll, and make a really short, fat capacitor,
    but it probably wouldn't have very much capacitance, albeit it's related
    to the thickness of the dielectric, which is the glue.

    Frankly, I've always wanted to take a couple rolls of aluminum foil and a
    couple of rolls of saran wrap, and make a demo cap, but then I saw the
    pie tin electrolytic....

    Good Luck!
    Rich
     
  3. The hobby magazines used to occasionally show how to make capacitors that
    way, using tin foil and newspaper. Not really useful for building with,
    but a good way of showing what's inside a capacitor.

    I never tried it, but one magazine showed how to make an electrostatic
    speaker using newspaper and tin foil. It was a trick project, you make
    it and leave the newspaper lying about, and it suddenly starts talking.
    Again, not likely useful as a serious speaker, but a neat gimmick to
    show the concept.

    Michael
     
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