ubermenehune
spending too much on rocks
Member since March 2016
Posts: 293
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Post by ubermenehune on Mar 25, 2016 18:36:32 GMT -5
I have a Thumler's Model B and the instructions advise three days in pre-polish. I've seen similar guidance online, along with the standard 7 day recommendation. What exactly is the pre-polish stage and why are there such varied guidelines?
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Post by Drummond Island Rocks on Mar 25, 2016 18:51:39 GMT -5
1000 grit aluminum oxide is my pre-polish stage. Not all rocks benefit from it but some rocks do. Agates and jaspers will shine fine without it but obsidian really improves with it as an example.
Chuck
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