old hound
starting to shine!
Member since August 2018
Posts: 36
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Post by old hound on Jan 25, 2020 21:09:31 GMT -5
Panther jasper first batch turn out with a mirror finish, second batch looks good but it looks like you poked them with a small pin in several dozen spots? Lot-o tumbled also does anyone know where I can get a couple of slabs of this material? Tried e-bay just found tumbling rough small stuff. Thanks
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old hound
starting to shine!
Member since August 2018
Posts: 36
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Post by old hound on Jan 26, 2020 13:03:04 GMT -5
Found one piece that was really rough on the end looks like different material could this have been what caused my pin holes?
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Pin holes
Jan 26, 2020 13:08:26 GMT -5
via mobile
Post by knave on Jan 26, 2020 13:08:26 GMT -5
Did you have small ceramics in the mix?
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Pin holes
Jan 26, 2020 13:51:09 GMT -5
via mobile
Post by Pat on Jan 26, 2020 13:51:09 GMT -5
Photos would help.
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Kai
spending too much on rocks
Member since December 2018
Posts: 331
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Post by Kai on Jan 26, 2020 13:59:06 GMT -5
This sounds like something that has been happening to me, also - tiny little holes, just wide enough for the grains of polishing sand to hide inside: Is this the same thing? If yes, why does it happen and how to prevent it?
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old hound
starting to shine!
Member since August 2018
Posts: 36
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Post by old hound on Jan 27, 2020 0:00:36 GMT -5
Lots of small ceramics didn't let it get dry ( which I have done and chipped all my tiger eye). Kai yes just like that a few more and maybe a little smaller. Thanks for the picture help us ROCK gurus!!!!!
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Wooferhound
Cave Dweller
Lortone QT66 and 3A
Member since December 2016
Posts: 1,423
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Post by Wooferhound on Jan 27, 2020 12:19:36 GMT -5
I think it is defects in the stone
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Post by pauls on Jan 27, 2020 18:41:01 GMT -5
This sounds like something that has been happening to me, also - tiny little holes, just wide enough for the grains of polishing sand to hide inside: Is this the same thing? If yes, why does it happen and how to prevent it? Kai I think those pits are part of the original surface of the stone, a lot of Agate forms with tiny balls of Agate on the inside of the cavity first. The inside of the cavity will eventually be the outside of the stone when it weathers from the host rock. They are interesting and can give you nice eye effects on the stone, they can also pop out and leave a pit, I think that is what you have here.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,159
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Post by jamesp on Jan 28, 2020 8:07:19 GMT -5
Did someone mention abrasive particles getting caught in stones with pits and pockets ? These stones had step 1 and 2 grit jammed in them throughout the tumble. Pre-polish and polish steps in the vibe vibe seemed to finish removing most of them. No noticeable scratches and a nice polish resulted. Partially silicified coral Silicified oyster attacked by borers Another partially silicified coral before tumbled after tumbled. Note SiC 30 remained jammed in many pockets. Not only are SiC 30 particles jammed in the pockets. Notice the aluminum oxide/Borax concreted in all pockets from the vibe steps. Due to the many pits in silicified coral I switched from Borax to sugar in the vibe. Sugar dissolves and releases concretions caught in pits better than Borax.
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Post by arghvark on Jan 28, 2020 12:09:25 GMT -5
A lot of the stuff I collect locally has pinholes and tiny pits. In my case it's definitely the rocks. Annoying to clean out. Many I leave soak for several days after removing from polish. This seems to allow most of the polish/borax to rinse out more easily. Thanks jamesp for the sugar tip. I'll try that in the vibe.
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