Will, I think I see part of your problem in your post.
All, I just read several posts in the messages about Keum-Boo.
It seems to be a problem to bring the frosted fine silver look to
the surface after Keum-booing.
As I understand the Keum Boo process, you should be depletion
gilding your silver BEFORE applying the gold foil. Once you’ve done
that, the frosted silver look will stay through the fusing of the
gold and through the subsequent pickling with no problem. You do
need to use a fresh batch of pickle for best results. When you take
the piece out of the pickle, you’re going to wash it by hand (NOT
brass brush), by the way.
We just did a bunch of keum boo demos last night and it worked
beautifully this way.
Hope this helps,
Handcrafted and Unique Artisan Jewelry