Hi Peggy....I, too, am at an 'intense hobbyist' level....I LOVE my
Covington tumbler. ($480 Cdn.) I use mixed shot -- keep covered with
water. Four good squirts of GREEN Palmolive dish soap. Tumble for
about 2-3 hours....and my silver and copper are pristine! (Finishing
well by hand BEFORE tumbling certainly helps. Jagged edges & 'lumpy'
solder will just be a smoother, shinier version of jagged and lumpy!)
From my (very) newbie perspective: if you have a foredom and can
finish and polish 'by hand', then perhaps invest in a rolling mill.
I just COULDN'T choose -- I bought BOTH!.....as a result my
piggy-bank is broken and bloody. Time heals most wounds....and I'm
having a helluva lot of FUN!
(My website hasn't been updated, I'm afraid....but I hope to have
more recent work added soon.....)