Alessio, It's been my experience that the etchant dissolves the paper completely, and it hasn't been necessary for me to do any paper cleanup whatsoever. There's substantial paper residue left before etching, but I just leave it in place. Like Tolga above, I use magazine paper for transfer and warmed FeCl for etching. The paper residue may affect other methods differently. -Andrew [Non-text portions of this message have been removed]
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Re: [Homebrew_PCBs] Paper
2010-06-13 by Andrew Villeneuve