Homebrew PCBs

I had some really crumby results with using nail polish as acid resist
so I had no great expectations from enamel hobby paint
BUT THIS WORKS GREAT!!!!!!
My search for a readily available acid resist for PCB touchup or hand 
crafted etching is over.
I painted on the copper with the thinnest paint brush I could find but I 
am certain this
paint would flow freely from a fine point technical pen or dip ink pen 
to make SOIC traces.
pictures:
   http://www.learnmorsecode.com/laminator/etch/enamel.html