The tumbler was from a gun-supply store, www.cheaperthandirt.com.
The manual shows how to dismantle the tumbler but doesn't say
anything about how to use it. The Lyman company says that even
though it's their smallest machine, it is tough enough to handle
There are several Internet articles on tumble-finishing, but I
assume they are geared for cast sterling jewelry. My pieces are
fabricated of fine silver, and while the surface changed from the
torchwork, it is not as rough as a casting (there are a few plier
marks, though). Wouldn't the medium needed for cast sterling be too
abrasive for fine silver?
Then I recalled that silver PMC (Precious Metal Clay) fires into
fine silver, and the folks at PMC Connection sell a rotary tumbler
and only one medium (stainless steel shot) for finishing. I guess it
ought to work for my stuff.