>You can put solder-mask on any PCB regardless of how you etched it etc.
FWIW....
I've been using a FAUX solder mask. :D)
After etching the board and cleaning it thoroughly,
I spray it with Testor's all purpose spray enamel,
#1601 "Candy Emerald Green". It drys in a hurry, but I let mine
sit overnight . The "trick" is to not spray it on too heavy. Just a
couple of light, even coats a few minutes apart will do it. A cardboard
box placed over the board will help keep dust off the fresh coating.
The traces are still easy to see and drill. It's transparent and melts
away wherever you want to solder.
As with any soldering or painting activity, use adequate ventilation.
If you want to try it, I understand that the color is being discontinued,
but it's still available on Amazon and at least one auction site. I've
never been able to find it locally.
Charlie
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