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Posted in response to Rock tumblers from Tim wolfe on March 08, 2008 at 09:43:15:

Re: Rock tumblers

It's unfortunate that you bought a Harbour Freight tumbler at all as they are Chinese junk.

I have several vibrating tumblers and several rotary tumblers and use them constantly. I have good luck with the vibrators using 50% media (plastic or ceramic) and 50% rock.
I was told to use as much water as you do grit, and it seems to work good. Using the tumbler you have, that should be about 2 tablespoons of each, or wet the entire load and drain it till it stops dripping and then add your grit/polish. The vibrators work fast and the slurry will get thick quickly so I check it often and add water(by the drop) as needed to keep it thin.

I also found that vibrating tumblers don't remove much material, so I grind my hard stones in a rotary tumbler to get the desired look and then use the vibrators for the sanding and pre-polish steps and then back to the rotary tumbler for the final finish.

I hope I didn't confuse you. I recommend you read the book How to Tumble Polish Rocks into Gems by Edward E Smith, the inventor of the vibra-sonic tumblers.He covers all aspects of tumbling, vibratory and rotary. David

From David Clark - April 08, 2008 at 18:18:13

Message: 66349

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