Copper Etching: Not Just For PCBs January 13, 2014 by James Hobson 29 Comments [Morag Hickman] is an artist who makes use of ferric chloride for something other than etching a PCB.

The quality is really amazing; the Instructables robot above was etched out of 0.7 mm thick brass, with an etch depth of 0.35 mm with only 0.05 mm of undercut. A very awesome build that is already ...