I got a brilliant jewellery making book for Christmas which covers loads of techniques, including acid resist metal etching. The book talked specifically about etching silver using the very scary nitric acid! Obviously I’m not keen to deal with serious acids like that, but it inspired me to do a bit of research into alternative etching methods.
I decided to start with copper etching and discovered a method for acid resist etching using ferric chloride. This acid is much easier & safer to use when your home or workshop doesn’t include a chemistry lab! The process is the same as for creating printed circuit boards from home, so it’s a popular technique for hobby electronics enthusiasts.
I’m going to write a full tutorial later, but here are a few of the pieces I’ve etched to whet your appetite!