Well, no project always go 100% smoothly, and the important thing when one fails, is to document the failure.
Tried to use a toner-transfer method to do a photo-resist mask tonight, to chem-etch a brass face plate for a couple of pieces of photography that I’m framing up for presentation / sales. I’ve done this before in college doing DIY PCBs and earlier on in high school for model airplanes.
The process involves mirror-inverting a photo negative of the mask pattern and then printing it out on a photocopier. Because toner is a thermoplastic, a regular clothes iron can be used to remelt the toner and transfer it to another medium – balsa wood for cutting (this is before laser cutters) or, in my case, a sheet of brass plate from K&S Engineering in Chicago for a name plate.
Turns out I forgot that you need special paper. Toner sticks really well to regular paper (no surprise):
Oh, and it helps to turn the steam off on the clothes iron. 
I think this is the stuff that I used in college. I’m placing an order tomorrow for a small sample, shipped pony express (ground) from Florida. So, check back in a week to see how it went.