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The Saltwater etch process

Step 9Clean the board

Clean the board
Remove rough edges of the board using a sandpaper (Or go out and rub it on a level rough cement surface).

Clean the copper surface using an abrasive cleaning pad - the one I use is intended for use in the kitchen, and copper is toxic so do not let your wife or mum relocate it to the kitchen after you have used it - it would also be a good idea not to borrow the one in the kitchen for this purpose.
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5 comments
Jun 14, 2007. 10:05 AMTheMadScientist says:
nah, hes just pointing out that your oblivious family members could possibly, inadvertantly poison themselves and that chance should not be taken...
Mar 9, 2007. 6:59 AMMacka says:
I suggest you use a single-cut file (has "teeth" in one direction only) for cleaning up the edges of the board, and using steel wool for cleaning up the surface of the board, this goes for removing the etch resist after etching. also, if you drill your holes before removing the etch resist (with the steel wool) you will find that the "barbs" around the drilled holes will be significantly cleaned up.
Dec 24, 2006. 2:54 PMrachel says:
Just want to point out your (presumably inadvertent) assumption here about your reader, that a) he is male, and b) he has a woman to keep house for him. I am female and keep my own house, but I will definitely be trying this process for my next one-off board project, as it looks relatively simple and quick and is truly excellently documented.
Dec 28, 2006. 4:51 PMrachel says:
Yes, obviously! Nevertheless, not all your readers are just like you.

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Author:neelandan
Employed as an Engineer in Electronics. Interested in building small circuits around tiny chips (the electronic kind).