Quote Originally Posted by Jeremy View Post
The only thing I can think that would be similar is the photo-resist emulsion on the screen.
It's basically a potassium bichromate/dichromate emulsion.

We have gallons of it here at work but I have never tried it for photographic use. I must try it out one day.

I have also thought about coating emulsion with a screen. I think one of our fine stainless steel meshes without a stencil would produce quite a thin coat.