jamesp
Cave Dweller
Member since October 2012
Posts: 36,155
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Post by jamesp on Apr 13, 2014 11:24:06 GMT -5
After a week my material has a wet shine. not this time. The barrel has a flap that catches coarse grit. It held about a 1/4 teaspoon of it. Cleaned it and ran another week and same dull polish. Sifted thru it and found another 100 particles of 30 grit. I have often found a few particles of coarse grit but with little effect in past tumbles. But a 1/4 teaspoon was too much. Clean your stuff well. Odd that it did not scratch. at least it does not look that way.
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tkvancil
fully equipped rock polisher
Member since September 2011
Posts: 1,546
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Post by tkvancil on Apr 13, 2014 14:16:00 GMT -5
Someone here once suggested to me that the correct slurry mix in polish would help avoid damage from a chipped stone. That was an answer to a question about the assertion that chipped rocks in the polish would ruin the batches shine. Never had a bad shine when I got a chipped rock in the polish cycle. Maybe when you had only a particle or three in there the polish mix cushioned it well enough? And the cushion provided this time only allowed minor scratches, enough to affect final outcome? No dedicated polish barrel? And oh yeah...I'm thoroughly anal about cleaning before polish.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,155
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Post by jamesp on Apr 13, 2014 17:59:56 GMT -5
Dedicated polish barrel solves all tk. Chips never seemed to be an issue. Meaning i have polished many loads w/fresh chips and never had a problem.
I notice your tumbles are very shiny. But that bit of coarse grit put a stop to that. Put them in a good barrel. But they will be shiny in 3 days.
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