I, also, have a tumbler from Harbor Freight. It’s been rolling for
several years and recently the belt finally broke. A friend suggested
other sources for belts. Wouldn’t you know, he found a sewing machine
belt that fit. Another source to check are vacuums.
surprised with the tumbler. Not so much with their dapping set,
which is not very well calibrated. It has other uses that don’t
require precise sizing.
Judy in Kansas, where it’s time to harvest asparagus and watch for
turtles to come up.