peachfront
fully equipped rock polisher
Stones have begun to speak, because an ear is there to hear them.
Member since August 2010
Posts: 1,745
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Post by peachfront on Mar 24, 2012 12:19:29 GMT -5
Ugh. We just had a thread on this topic, and now it has happened to me, and I can't find the thread. Can anybody direct me back to the discussion so I can review it and figure out where I messed up? What have I done here? Two days ago, they were well on their way to pretty and shiny...I plan to back them up to 200 grit after I spend a few days grumbling and groaning. Would love to review what everybody said when it happened to the other guy.
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Steve
has rocks in the head
Member since June 2005
Posts: 506
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Post by Steve on Mar 24, 2012 13:47:12 GMT -5
Looks like you need cushing material - such as plastic beads. The white along the edges are micro chips.
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Post by johnjsgems on Mar 24, 2012 13:59:20 GMT -5
You see that a lot with under filled bowls. People start with 2/3 full and by the time you are to polish bowl is 1/2 or less. Adding ceramics or plastic as filler would probably help a lot. If that is flourite I would keep bowl 3/4 full throughout.
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peachfront
fully equipped rock polisher
Stones have begun to speak, because an ear is there to hear them.
Member since August 2010
Posts: 1,745
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Post by peachfront on Mar 24, 2012 15:46:53 GMT -5
It's Amethyst, and I have a lot of it, so I guess I should be more confident and just fill the bowl more. I was doing about half full.
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Post by johnjsgems on Mar 24, 2012 18:01:26 GMT -5
That splains it. Picture a barrel rotating 3/4 full the rocks reach the top and roll on over. With 1/2 full they reach the top and drop hitting the rocks below them. If you want to do half batches use a filler medium to bring up to 3/4 full.
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