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Post by pebblesky on Oct 7, 2024 12:28:08 GMT -5
The Cherry Creek "Jasper" from the same batch of two-week stage 2 run. While they look less miserable than those who went through full the polishing cycle, they are definitely not low-effort tumbling material. They are soft and those even softer "healed" fractures could give you problem at the later stages. I still like their vibrant colors.  Some pieces hold better than the others for example the one at the bottom left. It had a lake blue background before tumbling, but changed to dark green afterwards.  The one on the top-right was also more charming when wet  |
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hplcman
spending too much on rocks
Looking forward to my Friday Night Barrel Clean out!
Member since August 2022
Posts: 497
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Post by hplcman on Oct 7, 2024 12:45:59 GMT -5
Regardless of the finish I think those are stunning rocks!
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choochoorocks
starting to spend too much on rocks
Rock hounding
Member since April 2020
Posts: 181
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Post by choochoorocks on Oct 13, 2024 13:36:22 GMT -5
Really like the red and dark green one!
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Post by pebblesky on Nov 2, 2024 23:25:24 GMT -5
 These are naturally shaped mudstones from Xinjiang. They were almost smooth and almost pit free before tumbling, so I skipped stage 1 and ran them in stage 2 for 2 weeks, to get rid of the annoying white coating on some of them and bring out more color. I wanted to keep the matte feel on the surface to some extent, but a couple pieces ended up more glossy than the others. Maybe one week in stage two would serve my purpose better.  The shapes make them good candidates for some rock art, or something else creative.  This piece is probably a keeper.  I like the shape of this piece. |
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Post by chris1956 on Nov 3, 2024 8:24:53 GMT -5
Nice! The closeup ones have really great patterns.
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Post by pebblesky on Nov 15, 2024 16:58:43 GMT -5
 This is one of the surprises that I would love to see after tumbling (stage 1) a seemingly patternless and boring stone. Since the layer with "pictures" is so thin, the pattern will be changed again after stage 2. |
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Post by chris1956 on Nov 15, 2024 17:21:17 GMT -5
This is one of the surprises that I would love to see after tumbling (stage 1) a seemingly patternless and boring stone. Since the layer with "pictures" is so thin, the pattern will be changed again after stage 2. I have had that happen to me. Go just a little too far and the pattern is gone. Sure looks great there. |
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Post by pebblesky on Nov 15, 2024 18:35:33 GMT -5
This is one of the surprises that I would love to see after tumbling (stage 1) a seemingly patternless and boring stone. Since the layer with "pictures" is so thin, the pattern will be changed again after stage 2. I have had that happen to me. Go just a little too far and the pattern is gone. Sure looks great there. Also happened to me several times. So I am thinking maybe to skip stage 2 and go for stage 3 directly. This type of rock won't have a super glossy finish anyway. |
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Post by Starguy on Nov 16, 2024 18:34:24 GMT -5
How hard is that mudstone pebblesky? It has a lot of eye appeal. The shaping makes it look like they were done in a vibe. I can’t remember if you run all rotaries or vibratory too. |
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Post by pebblesky on Nov 16, 2024 19:06:02 GMT -5
How hard is that mudstone pebblesky ? It has a lot of eye appeal. The shaping makes it look like they were done in a vibe. I can’t remember if you run all rotaries or vibratory too. The mohs hardness of these mudstones are normally around 5~6 with some part/area or color reaching 6.5. I normally do stage one in the Rebel 17 rotary, and do the rest stages in the vibe. For the mudstones in this picture I only did two-week stage 2 in the vibe, because they are naturally smooth enough to skip stage 1. This one was in stage 1 rotary for a week then in stage 2 vibe for two weeks. This one was in stage 1 rotary for a week, and I am thinking going directly to stage 3, or only throwing it into the later half cycle of the stage 2 (while the grits become finer than 120/220). |
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