- Joined
- Apr 27, 2009
- Messages
- 991
If you want to get ferric chloride it's less than $15 on Amazon for a liter. That's a lot. Ferric gives the blackest etch. Vinegar will be much more grey. If you want to try vinegar use a glass dish on your stove top and dip while it's heated. All of the acid that you use will be much more aggressive hot. I also do multiple dips. Wipe the oxides off between each etch.