In depletion guilding, is it critical that one uses Sparex when
quenching? Could one get the same results using a citric acid
solution to quench. What is taking place in the quenching action
that would be affected by the solution used? I am assuming that
the copper in the alloy is systematically being removed from the
metal’s surface. Will other solutions work for this?
I have been experimenting with the use of anhydrous granular
citric acid as a pickle. It has worked well for removing flux,
but will it work for depletion guilding? In depletion guilding,
does the temperature of the solution make any difference?
Because, the citric acid is most effective when used quite hot
(high on my crock pot).