Using Oxalic Acid
I have a few questions about using oxalic acid.
1. I am using a "Wood Bleach" strength (that's all I could find), and am guessing about the solution strength. I had some good initial results on a couple of pieces of hardware.
2. How long can I keep metal in the solution, and can I keep it in too long?
3. Where is the best source? I think the big drug store wanted to put me on a terrorist list.