I will describe my 'TILT-O-WHEEL'- a simple ball mill, or a pot tumbler,or a glaze material grinder.
I take a bucket,drill two holes and with longer screws than the usual bat pins,I attach it to the wheel head (use some washers too).
then,I put another bucket nestled inside-for interchangability ,and also then I don't have to fill the bolt holes.
then I simply TILT the wheel!
Put water, rocks and gravel-or porcelain balls- and set the wheel so the rocks tumble.
If grinding glaze materials,I have some pieces of steel or some old cannon balls or...
put the lid on for quietness-maybe line it with rubber,and let it roll.
Pots become nice and smooth to the hand, but don't appear much different in a picture.