Bruce Teschner wrote:
Am pretty new ;forgive me if this has been discussed todeath.
Put pins w. 18K overlay in pickle and they came out w. copper on the
gold. Is there a low tech way to remove it without abraiding the
You can give this formula a try. We sometimes use it to remove the copper coating from
silver that has been accidently pickled in an iron contaminated bath by a student (So
where did the iron come from???).
1/2 Cup Hydrogen peroxide (3%) (same stuff they sell in the drug store)
1 Tablespoon FRESH Sparex solution pickle or sulferic acid pickle (5-10%)
Warm the peroxide up to 190 to 200 degrees, a small crock pot works fine. Now add the
tablespoon of FRESH pickle. Do not add more pickle, this is only a catalyst. Place the
items to be pickled in the warm peroxide solution and agitate with a feather or plastic
spoon. The peroxide will bubble and this lets you know it is working. Check the
progress of your items after a minute, it won't take long.
Afterwards let the peroxide solution cool and store it in a dark brown bottle. The
solution is still good as long as it bubbles when used. No bubbles, the solution is
spent. Neutralize it with baking soda to dispose of the solution.