I'm about to have a go at electro-etching some brass tubing.
Looking to use a salt bath or copper sulphate as the electrolyte and a 12V car battery charger that produces 2.7amps. The aim is to use electrical tape & sign vinyl as the resist. The tape inside the tube will help hold on the wires.
How To Electro-Etch a Solid Metal Plaque
I'm fairly confident I'm not going to blow myself up
If anyone here done this before. Any helpful hints greatly appreciated.