fossilbrain
spending too much on rocks
Cookie Monster agate
Member since October 2007
Posts: 360
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Post by fossilbrain on Nov 17, 2007 0:47:43 GMT -5
Still getting some skills down, like pre-polishing thoroughly enough before final, etc... obsidian:  more dino bone:  emerald:  |
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Post by beefjello on Nov 17, 2007 10:43:19 GMT -5
Lookin' good Jeff! One thing that really helps eliminate the surface scratches is to dry the stone often between stages and look at it through a magnifier to make sure you've sanded all the scratches from the previous grits. The domes can be a bear (at least for me). Man that's some great lookin' dino!
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adrian65
Cave Dweller 
Arch to golden memories and to great friends.
Member since February 2007
Posts: 10,790
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Post by adrian65 on Nov 17, 2007 11:03:51 GMT -5
That dino bone is the boss! Beautifull!
Adrian
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Post by stoner on Nov 17, 2007 12:23:15 GMT -5
Very nice cabs. Does the obsidian have an "eye" in the center, or is that just a reflection? I never thought of cabbing some of the emeralds I have...hmmm...
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Post by Tonyterner on Nov 17, 2007 16:02:09 GMT -5
That dino bone is one heck of a beautiful stone. I've made a cab out of obsidian and some one here told me I was very brave. You must be brave too, only yours turned out shinnier.  |
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fossilbrain
spending too much on rocks
Cookie Monster agate
Member since October 2007
Posts: 360
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Post by fossilbrain on Nov 17, 2007 19:12:29 GMT -5
Stoner:
The obsidian doesn't really have an eye like that, but some of the effect might be because it is rainbow obsidian, it's just low on color. It has some depth, tho. I need to set up a permanent, better photography stand.
Tony:
I loved how easily the obsidian rough ground down. It was just touchy on trying not to undercut accidently and I couldn't get a shine until I tried just finally by hand on a chamois (my Dremel is invariably too fast and I don't have anything for polishing on the grinder) -- I tried ZAM, but then 14,000 diamond (just what I had around). My friend said use cerium. On preforming, the slimmer MK blade for my WF is way better for obsidian not chipping nearly as bad.
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luv2hound
freely admits to licking rocks
I try & I try, but dang it! Those rocks just keep ending up in my pockets
Member since June 2007
Posts: 890
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Post by luv2hound on Nov 18, 2007 19:49:22 GMT -5
Wow! That dino bone it outstanding. Great job.
~~Mitzi~~
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Post by bobby1 on Nov 18, 2007 21:04:43 GMT -5
Obsidian is one of my favorites. I have collected a lot of it at Davis Creek. If you look very closely you can see minute fiber-like areas parallel to the rainbow colors. If you cut a thick (1/2"), high domed, long narrow cab with the fibers running perpendicular to the long direction of the cab you will get an eye in the stone similar to Tiger eye. You need the thickness so the background will be as black as possible. The high dome emphasizes the eye effect. I polish on a carpet covered wheel with Cerium Oxide. I use this polishing method on 95% of my cabs. Here is a picture of a bracelet where I cut the Obsidian for the eye effect.  Here is a chunk of obsidian with the color bands that will cut an eye effect.  Bob |
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Nov 15, 2024 17:44:51 GMT -5
Nov 15, 2024 17:44:51 GMT -5
