I'm trying to use other metallic plates than zinc ones to engrave cadels letters. This time, a bit of "I don't know what" previously used as a lid of a cigar box.
the pinkish hue is not totally uninteresting but as the varnish started to unstick after a few minutes in the acid bath, I had to stop the experiment.
Maybe anoter try soon with another kind of varnish ??
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