rockdewd
has rocks in the head
Member since October 2007
Posts: 605
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Post by rockdewd on Jul 1, 2008 16:37:41 GMT -5
I came across a deal on a large quantity of 22.0 micron alumna oxide. Right now I've got two 50 lb buckets but if I move quickly I can get more. I won't have any stones ready to polish for 3 more days to test it out.
My question is: Is 22.0 micron Alumina Oxide suitable for a polish or is it a prepolish?
Rick
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rallyrocks
fully equipped rock polisher
Member since November 2005
Posts: 1,507
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Post by rallyrocks on Jul 1, 2008 18:29:13 GMT -5
That is about 1000 grit, so pre-polish is all. For polish I think you generally want <3 micron AlOx, usually 0.5-1.0 here's a handy reference from the world of faceting: www.faceters.com/askjeff/answer67.shtml |
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rockdewd
has rocks in the head
Member since October 2007
Posts: 605
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Post by rockdewd on Jul 2, 2008 10:48:24 GMT -5
Yeah, I did some calculations and came up closer to 1200 grit. But my calculations could be flawed. Still pre-polish. Oh well, I'm sitting on 100 lbs of pre-polish. Figuring I'll use 1/4 cup a week in my vibe tumblers I'm pretty much fixed for life on pre-polish.
Thanks for the link to the chart rallyrocks. It will save me a lot of head scratching in the future.
Yep, I stll have the AO you sent me rockitman. I use it when I'm doing a batch all the way to polish in the rotaries. I haven't tried it yet in my vibes...
Rick
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rockwizz
freely admits to licking rocks
Member since May 2007
Posts: 971
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Post by rockwizz on Jul 3, 2008 14:46:26 GMT -5
Hey would you like to trade an FRB for a box of this stuff? I can send you an assortment of agates, from UT, AZ, OR.
Let me know.
Ozzy Henriquez
1696 springwater Dr.
Orem, UT 84058
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rockdewd
has rocks in the head
Member since October 2007
Posts: 605
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Post by rockdewd on Jul 5, 2008 18:08:54 GMT -5
Rockwizz, sure thing. Sent you a PM.
Rick
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