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Post by Original Admin on Jan 28, 2005 20:17:26 GMT -5
I discovered today that these two (this is my example - there may be other combinations) grind each other down without grit.
Ive had a run on with a load of Blue and Green and nothing else, and after just two days they look like they were spinning with 80 grit for 5 days.
So if you want to save a few pounds on the 80 front, just stick the rough in with "itself" for a while.
Well worth a try - I'll get some more rough of something or other and try it on that the morrow. I'm quite interested in this as 80 grit is the most costly for me - by volume.
The Blue Lace is out now - just waiting for the sun to shine to photograph the stuff.
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Post by docone31 on Jan 28, 2005 20:33:57 GMT -5
Another trick is to throw some dunnage corundum stones from other tumbles in. I have tried that trick, both running aventurine with just itself, and using corundum as dunnage. I have also used halite, and calcite with harder stones. That does as well as 80/90 for breaking off rough edges, and general smoothing of the stone. Once that is done, then the addition of 80/90 really kicks in. I have also used sandblasting grit. I suspect that works just like rubbing aventurine against it self like you were saying. It does break down fast. I have played around a lot with preforming stones for tumble. I have just run the batch without grit for two weeks, then added grit. It did not speed up the process, but the end results I liked a little better.
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stefan
Cave Dweller
Member since January 2005
Posts: 14,113
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Post by stefan on Jan 29, 2005 15:16:33 GMT -5
what is dunnage corundum? just wondering
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Post by connrock on Jan 29, 2005 16:58:16 GMT -5
Sounds like an idea Andy. Thanks,,,,, Tom
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