On Sun, 3 Apr 2011 14:19:39 -0700 (PDT), whit3rd
wrote:

On Saturday, April 2, 2011 11:52:47 PM UTC-7, shmoeusn wrote:
I am trying find the proper method to obtain photo quality acid etchings
on
stainless steel.

It's possible to etch 304 with ferric chloride, masking with KPR
(Kodak photoresist) just about like with copper printed circuit
photofabrication. I vaguely recollect the photoresist had to
be baked after application (it didn't adhere well otherwise).

I have never managed a decent etch with Ferric Chloride on stainless.
It works on mild steel but slowly and the etch is shallow compared
with copper and brass.

Electro-etching is a possibility in but given the nature of the image
the details of the process will be critical. I have never done
half-tones that way.

Michael Koblic,
Campbell River, BC