I am wanting to try making my own pattern plates for roller mill printing. I successfully did some etching in brass, using a toner transfer method (with Pulsar toner transfer paper, which worked pretty well), but found that the brass plate really didn’t hold up to more than one or two times through the rolling mill. I did use ferric nitrate for etching the brass as an experiment, since that’s what I had and it made a decent etch!
I have done some research on etching steel, using ferric chloride, but wanted to see if anyone has done this and if there are any tips before I go making another mess and more toxic waste.
Also, how to properly dispose of both ferric nitrate (which I use for directly etching on sterling) and the ferric chloride? I’ve got some containers of both sitting on the back porch wait for proper disposal. I assume my hazardous waste center?