On 6 Aug 2012 at 21:16, Chris Tofu wrote:
C: Again I haven't followed this thread from the
beginning. You can
conduct simplified etching by encapsulating a piece of copper/brass
w/packing tape, almost any type will work, and cut out shapes and
whatnot w/an exacto knife. Then you submerse it in etchant. Depending
on how well the tape/adhesive adheres, and how long you keep it in
there, you may have good success. It works and is reasonably precise.
But although I know who Napier was, I don't know what is meant by
"bones", so I don't know if it's suitable for these purposes.
Go to WikiP--they've got a nice explanation.
You'd want to do the brass etching using an overlay of wax, with the
design carved into it. At least when I've had to etch brass, that's
the way I've done it.
But brass engraving is ever so much more pleasing to the eye than is
etching. The lines are crisp and the engraving line itself has a V-
shaped profile.
--Chuck