If you like the magnetic pin finishers it’s fairly easy to make one.
There are several videos online that outline the construction
Basically use (4) 25x25x10mm neodymium magnets, use a high N rating,
securely affixed to a disc thats attatched to a motor shaft. Use a
thin non magnetic surface to place your bucket of pins, ordered from
a jewelry supply house some folks use tacks or staples or whatever
but just buy the pins, throw in some water, soap and jewelry. The
one I built works like a champion.
Discarded washing machine motor -free
scrap wood for the cabinet and mounting disc for the magnets - free
light switch and bulb socket power cord all salvaged - free
magnets - 60$ don’t buy weak ones
epoxy - 4$
acrylic sheet on which to place the bucket of pins - 5$
tiny bulb for power socket - 3$
Even if you had to buy it all it should run about 100$ sans motor. I
didn’t need a power light indicator either as mine is loud enough
you wouldn’t mistake it.
I use both my magnetic pin finisher as well as my rotary tumbler.
Good luck, Jim Doherty