On Wednesday 09 July 2003 15:20, Peter L. Peres scribbled:
> The photopositiv spray laquer I use says to use 7g/liter NaOH at room
> temperature, with time at about 1 minute.


Peter,=20

I assume this means that you sensitize bare copper boards with this spray=
=20
lacquer, for use with as the positive-photo-etching system (like the MG=20
positive-etch boards)...?  If so, where do you get this stuff from?

Cheers
-Neil.

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