afterburnt
starting to spend too much on rocks
Member since June 2021
Posts: 152
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Post by afterburnt on Jul 12, 2021 20:32:57 GMT -5
Will I be ok combining 6's with 7's?
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Post by perkins17 on Jul 12, 2021 20:40:34 GMT -5
Probably but I would recommend the use of ceramic pellets of plastic pellets.
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Post by greig on Jul 12, 2021 23:57:46 GMT -5
"The Code is more what you call guidelines, than actual rules."
In fact, some of the same kind of rocks may have a larger natural spread of Mohs hardness than 1. If you find any in a batch that round too quickly or not enough, relative to the majority in the barrel, then take them out and run them later with other rocks.
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gatorflash1
spending too much on rocks
Active in Delaware Mineralogical Society, Cabchon Grinding and Polishing, 2 Thumlers B's and a UV-18
Member since October 2018
Posts: 375
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Post by gatorflash1 on Jul 13, 2021 11:08:41 GMT -5
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Post by broseph82 on Jul 13, 2021 11:55:19 GMT -5
So in my experience you can mix them all day long in your first stage and course grit and absolutely nothing will happen to them. It’s the 500g+ is where you need to separate hard from soft.
What are you tumbling together btw?
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afterburnt
starting to spend too much on rocks
Member since June 2021
Posts: 152
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Post by afterburnt on Jul 13, 2021 13:21:43 GMT -5
So in my experience you can mix them all day long in your first stage and course grit and absolutely nothing will happen to them. It’s the 500g+ is where you need to separate hard from soft. What are you tumbling together btw? I was just wondering, the only 6's that I have are Labradorite and Amazonite. I am running a rotary for stage one perpetually, adding new rocks as space becomes available. Right now they are full of various agates, jaspers, and quartz.
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Post by rmf on Jul 13, 2021 13:24:25 GMT -5
from my tumbling combining 6 & 7 is ok for coarse grinding to 220 but then as you get finer you want them separate to get a good polish on the H=6. I hate sorting them back out so I do them separately. For Lortone 3A tumblers, I tumble all h=7 together. But with a 6# or 12# drum or anything with a larger diameter I separate Agates and jaspers(true jaspers not rhyolites posing as jaspers) from quartz and aventurine. Not because of hardness but because the quartz and aventurines are not as tough as the Agates and Jaspers and they get more banging as the drum diameter goes up.
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Post by broseph82 on Jul 13, 2021 16:09:33 GMT -5
afterburntAh okay. Yeah I have a batch of lab, marble, and Amazonite currently. Anything past the 120 stage with those mixed and the labs will look like crap. For some reason the like to get beat up past the initial rough tumble
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