Found a used 12 lb capacity Thumbler rock tumbler at a garage sale, missing the lid and clamp, and needing a belt, for just a few bucks. So, I ordered the parts and now she is all cleaned up and fixed up ready to clean clad. The drum is about 1 gallon size, and I don't have that much clad! How full does the drum need to be to function correctly? The directions say, for tumbling rocks, 3/4 full with contents just covered with water. Do I need to get 10 lbs of natural gravel, or can I use 5lb. and run it less (half) full?
btw. There was some old paperwork with the tumbler, and it appears it was purchased in 1994. Retail price was $34.95. Value of the $ sure is going down.
btw. There was some old paperwork with the tumbler, and it appears it was purchased in 1994. Retail price was $34.95. Value of the $ sure is going down.