I don't remember the actual comment here. Yes, enamel is still being
used via silk screening in this country. Their are several companies
still creating US park service signs. KVO Industries in Santa Rosa,
CA is doing this.
I have been doing some vitreus enamel silk screening on enamel /
The best I can offer you is to contact Thompson Enamels.
They sell silkscreening kits and also you have the best technological
skills present at Thompson.
enamelist, jewelry artisan