cool, I do that to bj, but I don,t know if it works on this scale. you can also use rough leather
mostly with pickle/ copper plating its copper already disolved in the pickle that plates. maybe there is an ellement or metal in your welds that binds more easely with the pickle than copper(hard proces to describe phisics in english,). as a result the pickle(whe use desolved sulfuric accid) lets go of the desolved coper witch is plated, and binds with the new ellement. this is what happens with iron and aluminum in pickle
try using new pickle, with no copper oxides in them.
if that doesn't work, a friend and former master of mine, willem jonkers III usses ferrichloride. bit agresive but you could try it.
let me know if you find something, hope you can cope with my english.
cool, I do that to bj, but I
cool, I do that to bj, but I don,t know if it works on this scale. you can also use rough leather
mostly with pickle/ copper plating its copper already disolved in the pickle that plates. maybe there is an ellement or metal in your welds that binds more easely with the pickle than copper(hard proces to describe phisics in english,). as a result the pickle(whe use desolved sulfuric accid) lets go of the desolved coper witch is plated, and binds with the new ellement. this is what happens with iron and aluminum in pickle
try using new pickle, with no copper oxides in them.
if that doesn't work, a friend and former master of mine, willem jonkers III usses ferrichloride. bit agresive but you could try it.
let me know if you find something, hope you can cope with my english.
ambition