Dave
This is the first time I tried etching so I was fetching it out every 10
minutes or so to see/feel how deep the etch had got. I knew I needed
enough depth to hold a layer of paint. But was not sure if I would get
undercutting or how the chemistry of etching copper/zinc as against just
copper would work. I have some more sheet brass and I'll try some more
experiments sometime.
What is of concern was my apparently poor application of the photoresist
as there are a lot of pitting across the surface where I must have left
a small hole in the photoresist. But in practice it just adds to the
patina in this case but may be undesirable for other projects.
Grahame
On 08/03/2012 23:15, Lucky wrote:
Something I have noticed Grahame, looks like you have got a nice deep
etch with a clean cut to it. How calculated was that? And/or was it in
and out of the bath multiple times until you got it as you liked?
On Wednesday, 7 March 2012 17:20:02 UTC, Sgitheach wrote:
http://www.sgitheach.org.uk/scope1.html
<http://www.sgitheach.org.uk/scope1.html>
Enjoy
Grahame
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