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Post by tkrueger3 on Sept 4, 2009 20:28:52 GMT -5
I've hated this jade cab since I first cut it out of the slab. I worked on it every which way from wherever trying to get a little shine on it. Since I don't like it, and I've been wanting to try a groove wrap, I decided it was my practice piece. Anyway, it's my first attempt at grooving. Even with a grooving arbor on my stained glass grinder, I had difficulty maintaining an even depth of cut. (as should be obvious!) Thanks for looking, and many thanks for all the education y'all have provided me here for the past few months. Tom
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Post by Tony W on Sept 5, 2009 0:19:29 GMT -5
Looks good to me. I made a guide for my groove cutter by adding washers to the shaft under the cutter. Seems to work well as long as I keep the cab tight to the floor and don't lift it by mistake as I turn it. T
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Post by tkrueger3 on Sept 5, 2009 11:32:29 GMT -5
Thanks, Tony - I'll have to see if there's a way to add washers on my particular grinder. Or maybe I can just make some kind of jig to hold the cab against while I turn it. I didn't have any problem keeping the groove straight - just the depth is all. Appreciate your advice.
Tom
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Post by rockmanken on Sept 5, 2009 14:53:21 GMT -5
Looks good to me. Wrap looks good too. Ken
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Post by frane on Sept 5, 2009 20:53:01 GMT -5
Looks good to me! Keep up the great work! Fran
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Saskrock
fully equipped rock polisher
Member since October 2007
Posts: 1,852
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Post by Saskrock on Sept 6, 2009 1:45:44 GMT -5
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Post by sitnwrap on Sept 6, 2009 6:57:51 GMT -5
I really like the stone and the effect the twisted wire has. I also like off centerd designs so even if the wire isn't sitting right according to groove wrapping (which I have never done) I like the pendant.
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Saskrock
fully equipped rock polisher
Member since October 2007
Posts: 1,852
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Post by Saskrock on Sept 6, 2009 10:28:09 GMT -5
Forgot the link , oops. Put it in now.
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Post by Hard Rock Cafe on Sept 6, 2009 11:25:56 GMT -5
I don't have any experience with jade, but from what I've read it tends to undercut due to the "grain" of the stone. Here's what John Sinkankas has to say: "Disk or drum sanders fitted with leather are excellent for fine sanding of many gemstones that would sand poorly on ordinary abrasive cloth. Thin leather is used, either backed with felt for sponge to provide a yielding surface, or stretched over a disk sander and allowed to sag in the middle. Although grits as coarse as 400 can be used, I have had the greatest success using a thin slurry of 1200 silicon carbide. This combination is startlingly successful on notorious undercutters such as jade, rhodonite,....Leather is also used successfully with diamond powder..."
Hope this helps, Chuck
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Post by tkrueger3 on Sept 6, 2009 11:48:17 GMT -5
Chuck, with this piece, I had no luck at all until I got some of the Ultralap discs from Kingsley, and used them on the 8" polishing disc on my Lortone SA-8. I think the chrome oxide Ultralap is what finally put a little bit of a shine on the jade for me. Those also did the trick for several other cabs I'd been working on - some amazonite, sodalite, etc.
Tom
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