🚀 go-pugleaf

In article <C0nqAB.55B@gantz.bowlgreen.oh.us> gantzm@gantz.bowlgreen.oh.us (Michael L. Gantz) writes:
>I have been reading all the articles concerning the etching of circuit
>boards, something I have a great need to do.  And they all assume that
>one would be etching the copper off of the board.  Is it possible for
>the home hobbyist to devise a system to deposit copper onto blank
>boards?

	There are commercial processes that deposit copper (and
some really fancy ones, that use a laser and chemical pyrolysis,  to
literally draw wires with a light pen), but these are generally
unsatisfactory.

	The plated-on copper coating is brittle and subject to
cracking (not desirable features), so glued-on copper sheet and
subtractive processes are preferred.  There ARE some plating
baths that don't have the cracking problem, but these are not
suitable for home use (and aren't easy to use commercially, either).

	Plated-through holes are the only additive copper processing
that most fabricators can reliably employ.

	John Whitmore