View Single Post
Old 5th November 2017, 03:38 PM   #12
kino's Avatar
Join Date: Dec 2004
Posts: 709

Great job on the etching the Indonesian spearhead Thomas.
I've never heard of etching with instant coffee until now. I had to google it and found the process.
In your experience with it, how does the coffee etchant react with copper or brass?

Thanks for sharing.
kino is offline   Reply With Quote