Jason, just make up a solution for pickling (PhDown, i.e., sodium
bisulfate or Sparex No. 2 – they’re all the same) and add some of
the drugstore hydrogen peroxide. To tell if it’s working, see if
tiny, tiny bubbles are rising from the surface of your work. Over
time, try adding a little more PhDown and/or a little more H202. I
also heat mine very gently to try to speed the process. Do not let it
boil! It’s a lot slower than using 50:50 nitric acid to bright-dip.
This is for removing the red cuprous oxide (the black cupric oxide,
and any glaze from excess flux, will come off in the pickle). Go into
the Orchid Archives for previous discussions on this.