Fossilman
Cave Dweller
Member since January 2009
Posts: 20,711
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Post by Fossilman on Jan 13, 2016 18:44:54 GMT -5
Did many runs with gravel as a filler in my petwood and agate runs (Tumbling)...Those granite pieces are one tough Umbras!!! I would never run a batch,just because..LOL-You wouldn't get great results for a very long time.. These have been in my tumblers for fill,I would say a year or so..No show for wear at all.. A bit of a shine,but nothing to write home about... Well in they go again.....LOL
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,562
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Post by jamesp on Jan 19, 2016 0:57:42 GMT -5
Did many runs with gravel as a filler in my petwood and agate runs (Tumbling)...Those granite pieces are one tough Umbras!!! I would never run a batch,just because..LOL-You wouldn't get great results for a very long time.. These have been in my tumblers for fill,I would say a year or so..No show for wear at all.. A bit of a shine,but nothing to write home about... Well in they go again.....LOL Gravel similar to that is 100's of feet deep around here Michael. About $20/ton delivered crushed to road gravel. Have used it for filler too. Does great. Granite has a lot of softer felspar. It also makes slurry faster than agate. Such slurry about like our clay, our clay is just worn granite. Lots of felspar in granite, a nice heavy rock and makes a nice heavy slurry.
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,711
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Post by Fossilman on Jan 19, 2016 10:20:10 GMT -5
This is the gravel I get from my "gold concentrates" from Alaska....I sort it out and keep the small gravel for tumbling...
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,562
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Post by jamesp on Jan 19, 2016 11:57:10 GMT -5
This is the gravel I get from my "gold concentrates" from Alaska....I sort it out and keep the small gravel for tumbling... Looks just like Georgia granite. Pink areas are pink felspar. Usually ours has white felspar. Felspar based clays are gentle. Actually edible. A bit of a laxative for the tumbler barrel. I tumble metals with granite, metals make tons of gas. The granite is stable and seems to reduce the gas. Metals stain and 'poison, the granite filler. Don't use the dirty metal stained granite filler on rocks. Look up kaolin. It has bunches of aluminum oxides, I think that comes from the felspar.
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,711
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Post by Fossilman on Jan 20, 2016 13:21:59 GMT -5
This is the gravel I get from my "gold concentrates" from Alaska....I sort it out and keep the small gravel for tumbling... Looks just like Georgia granite. Pink areas are pink felspar. Usually ours has white felspar. Felspar based clays are gentle. Actually edible. A bit of a laxative for the tumbler barrel. I tumble metals with granite, metals make tons of gas. The granite is stable and seems to reduce the gas. Metals stain and 'poison, the granite filler. Don't use the dirty metal stained granite filler on rocks. Look up kaolin. It has bunches of aluminum oxides, I think that comes from the felspar. Note to self-Thumbs up
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