I cut a lot of smaller pieces and I have a "tumbler" but can't stand the noise. I got
Really tired of nicking my fingers with wire wheels and throwing the resulting "shrapnel"
Into the jewels...

other than my hands or time consuming clamps. After much thought I bought a permanent
Magnetic chuck. They are used in surface grinding applications and once I turn the handle
it has no problem handling a handheld grinder with a wire brush at full speed. The parts hold
tight until I turn the handle to release the magnets.
I also bought a leather apron for the shrapnel.
Anyway, hope this helps someone keep their digits and saves
them some time. I know it's been a godsend for me.
Cheers,
Treavor