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Clean, simple way to strip oxide from aluminum.

  1. Jan 20, 2010 #1
    Hello All,

    I'm normally over on the electronics forum, but recently I had a problem crop up regarding the spot welding of aluminum foil. I've seen the end results of the process, so I know it can be done cleanly. For that matter, I've seen pieces that predate laser welding, etc, so I'm confident it doesn't involve exotic technologies.

    My question is this:

    Given that I can process and weld the foil in a glove box, what would be the best ( cleanest / safest ) way to prep the foil for welding ( i.e. strip off oxide and leave a clean surface )

    Thanks in advance,

  2. jcsd
  3. Jan 20, 2010 #2


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    800 grit sandpaper ?
    Or Phosphoric acid
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