Lots of very helpful replies. Thanks Zurie, hfjacinto
https://www.greenbrookcoins.com/ , Marve65.
Hondo Boguss, no doubt the oil would exclude moisture, but pretty sure it would darken the zinc as it gets in the pores. I'm going to have to experiment. In the metalworking industry vanishing oils are used where you need a lubricant but don't want it to stick around. We never used them when I was working.
In my work in a copper alloy wire redraw mill (brasses, bronzes, nickel silvers, beryllium copper, pure copper), if we had to respool a spool of wire that was loose and was in danger of tangling when the wire was pulled from the spool, we used 99% Isopropyl alcohol as the lubricant. In those cases we could not use anything that would leave a residue behind. We sprayed it on the build ups at the corners of the spool to help the wire pull out of the corner. It evaporated as it left the spool. Most of the wire was less than 0.010" in diameter, down to 0.003" dia. One kink and the wire breaks.
Edited by jerrytheplater
10/01/2025 10:35 pm