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Post by Drummond Island Rocks on Jun 19, 2015 5:37:12 GMT -5
This is my first 4 pounds of the 25 pounds of rough I busted up for tumbling from our trip over Memorial weekend. The longer this stuff tumbles in 500 and polish the worse the matrix undercuts so these did not spend long in the lot-o. The jaspers would benefit from a longer run but you would sacrifice the matrix in the process. Here's the rough shot for reference Thanks for looking Chuck
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Post by orrum on Jun 19, 2015 6:43:41 GMT -5
Those are sure nice Chuck. The long time in 500 could be my problem. I keep throwing in saw scraps of Puddingstone that I get from folks and it looks so good at first but ends up so awful. The matrix will be sorta flaky looking like rotten quartz.
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Post by iant on Jun 19, 2015 7:22:22 GMT -5
They look good enough to eat!
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Post by Drummond Island Rocks on Jun 19, 2015 8:13:07 GMT -5
Those are sure nice Chuck. The long time in 500 could be my problem. I keep throwing in saw scraps of Puddingstone that I get from folks and it looks so good at first but ends up so awful. The matrix will be sorta flaky looking like rotten quartz. Yep, that's pretty much what I am talking about. Chuck
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rodeodan
starting to spend too much on rocks
Member since January 2010
Posts: 213
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Post by rodeodan on Jun 19, 2015 9:13:55 GMT -5
great looking batch
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Post by snowmom on Jun 19, 2015 14:54:55 GMT -5
slick shine! love it!
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Post by Drummond Island Rocks on Jun 19, 2015 20:01:41 GMT -5
have you collected enough of these for a batch yet snowmom ? Chuck
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Post by snowmom on Jun 20, 2015 4:35:38 GMT -5
LOL, every time I get enough for a pile, I end up sharing with people who don't have any and want some... I have a few smalls yet, got to get them broken up at some point, the sharing would go farther, wouldn't it?
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,182
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Post by jamesp on Jun 20, 2015 5:02:23 GMT -5
So what you have a little under cutting, those have plenty of shine.
Granite, amazonite, dallasite, basalt bases, rose quartz(a bit), labradalite, quartzite, gneiss, felspars and a few others that like to undercut and frost or defy polish may be better off done in the rotary start to finish. I collected all of the above and stuck them in a rotary barrel with super thick clay based slurry. Been running them for 3-4 months. About ready to move to (AO) 220. Will do AO 220 and AO 500 with thick clay slurry, and then 1000 and 14,000 with super thick sugar slurry. Fingers crossed.
The vibrasonic vibe reaps havoc undercutting on these type rocks. You mention time, seems the best way is to do 500/1000/14,000 as short a time as possible. And that can be a tricky call.
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Post by Drummond Island Rocks on Jun 20, 2015 8:53:20 GMT -5
Thanks jamesp - I have no issues with the way these come out I was just trying to explain the process. I skip 1000 figuring doing a run in 1000 would be the same as an extra day in 500 and I have learned that does not work very well. I honestly have not finished a batch in my rotaries in years but have really been wanting to do some experimenting with pudding stones in a rotary with various medias if I ever get some time. Chuck
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,182
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Post by jamesp on Jun 20, 2015 9:31:48 GMT -5
Thanks jamesp - I have no issues with the way these come out I was just trying to explain the process. I skip 1000 figuring doing a run in 1000 would be the same as an extra day in 500 and I have learned that does not work very well. I honestly have not finished a batch in my rotaries in years but have really been wanting to do some experimenting with pudding stones in a rotary with various medias if I ever get some time. Chuck Let's see what happens with my granite mix. Just did clean out and started AO 220 this morn. Using 40% tumbled granite pea gravel as filler.
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Post by Drummond Island Rocks on Jun 20, 2015 19:14:18 GMT -5
jamesp - I am getting old but not too old too learn a few new tricks. Chuck
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,182
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Post by jamesp on Jun 20, 2015 19:56:16 GMT -5
jamesp - I am getting old but not too old too learn a few new tricks. Chuck You got it dialed in. What to learn ?
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Post by Drummond Island Rocks on Jun 20, 2015 20:25:58 GMT -5
jamesp - I am getting old but not too old too learn a few new tricks. Chuck You got it dialed in. What to learn ? I don't think I would be 100 percent happy until these tumble as good as they cab. Might not be possible but gotta do some experimenting. Chuck
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,182
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Post by jamesp on Jun 20, 2015 21:20:34 GMT -5
You got it dialed in. What to learn ? I don't think I would be 100 percent happy until these tumble as good as they cab. Might not be possible but gotta do some experimenting. Chuck Tumbling seems to gouge, wheels not so much. Darn granite countertops/cabs are like smooth plate glass, not so much with granite tumbles. May be a way though. e x p e r i m e n t
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Thunder69
Cave Dweller
Thunder 2000-2015
Member since January 2009
Posts: 3,102
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Post by Thunder69 on Jun 21, 2015 19:12:00 GMT -5
Thats a good looking batch Chuck...John
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catskillrocks
fully equipped rock polisher
Member since July 2008
Posts: 1,270
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Post by catskillrocks on Jun 24, 2015 20:00:11 GMT -5
Good looking is right! Chuck, you & Jamesp have answered a problem that I always seem to have. The longer I keep some stones in 500 or 1000 grit so that they will come out better, actually deteriorate by undercutting, especially on the MANY granite pieces that I have. So maybe less is more.
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