Otto Nobedder wrote:Coldman wrote:Nice clear macros Steve. What did you etch with?
Dilute sulfuric acid.
The metal was dressed to 600 grit, then I submerged them in "Alumabrite", diluted to about 25%, for maybe five minutes.
It was that, or try an even more dilute solution of phosphoric acid in a rust-blck primer that would have had other impurities to deal with, so I tried this first and it worked.
Steve, would this solution be okay to etch any alloy?