On Tue, 5 Nov 2002, Roman Black wrote:

*>Yes water-soluble is a large part of the
*>problem, both causing bad beading (ie low
*>adherence to the copper) and is totally
*>unsuitable for etching anyway. :o)

You could use inversion masking. Print with bubble on copper then spray on
a nitro or other based laquer while the bubble ink is still wet. The
laquer won't catch on the wet parts. Thus you would obtain a negative in
laquer after partly drying the laquer and washing with water. This has not
been tried but certain kinds of stone printing used in graphics arts use
this method (or nearly) and do work (and have for hundreds of years).

I am under the impression that the wax transfer jets work directly for
etching if enough print density is achieved (i.e. Epson etc).

Peter

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