jasonshort
starting to spend too much on rocks
Member since June 2019
Posts: 113
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Post by jasonshort on Aug 7, 2019 12:47:20 GMT -5
Can anyone tell me the thickness for cutting pendants and earrings? Thanks  |
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Post by rockjunquie on Aug 8, 2019 7:22:35 GMT -5
Not really sure what you are asking. Do you mean to tumble or cab? If you just want slices to tumble and add a hole for a bail or ear hook, then I would say 1/8 inch for earrings. Pendants can go heavier. For cabbing about 5-6 mm.
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jasonshort
starting to spend too much on rocks
Member since June 2019
Posts: 113
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Post by jasonshort on Aug 8, 2019 8:12:02 GMT -5
That is exactly what I needed
Thank you
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Post by Peruano on Aug 9, 2019 6:53:13 GMT -5
On my one slab saw that has threads of 20/inch on the lateral feed of the vice. 5 turns of the handle give me the typical 1/4" slab thickness. If its something fragile or a big pattern, I sometimes give it 7 to give me flexibility. For earrings and things I will want lighter its 4 turns or a bit less, but certainly not 2 1/2 x. Strangely my other saw has a slightly different thread spacing so everything on that gets 6 turns of the lateral feed on the vice. Too thick is too much work, too thin is yes too much work.
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Post by hummingbirdstones on Aug 9, 2019 8:29:58 GMT -5
For making matched pair earring stones, cut the slab thicker. Grind the one thick piece to the shape you want and then split the stone on a trim saw to cab.
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jasonshort
starting to spend too much on rocks
Member since June 2019
Posts: 113
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Post by jasonshort on Aug 9, 2019 18:16:06 GMT -5
That is an interesting idea. I might have to try that
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NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,688
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Post by NRG on Aug 14, 2019 22:42:04 GMT -5
On my one slab saw that has threads of 20/inch on the lateral feed of the vice. 5 turns of the handle give me the typical 1/4" slab thickness. If its something fragile or a big pattern, I sometimes give it 7 to give me flexibility. For earrings and things I will want lighter its 4 turns or a bit less, but certainly not 2 1/2 x. Strangely my other saw has a slightly different thread spacing so everything on that gets 6 turns of the lateral feed on the vice. Too thick is too much work, too thin is yes too much work. What about blade kerf? My 20tpi crossfeed needs 7 turns to get a 1/4" slab because one must bypass the blade kerf each time. |
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Post by Peruano on Aug 15, 2019 6:30:22 GMT -5
The kerf is always there and always the same. It seems to me it shouldn't affect calculations except for the first cut.
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NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,688
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Post by NRG on Aug 15, 2019 14:06:19 GMT -5
The kerf is always there and always the same. It seems to me it shouldn't affect calculations except for the first cut. Make a cut and look at the geometry. The stone starts right side of blade. Now as you move it left, it takes a turn or two of the crossfeed handle to bring the fresh cut edge to the left side of the blade. Now, visualize you have move the stone left to the left edge of the blade. You can make a cut and get a zero thickness slab, and this after a turn or two. That first turn or two take up the kerf thickness. Or, you can take 5 more turns to get a 1/4" slab. Please advise me of your thoughts. Hope it's not too hot in NM at the moment. it's 108° here! Yuk! |
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Post by Peruano on Aug 16, 2019 14:42:41 GMT -5
You are correct. I was not expressing what I did adequately. My delay in responding was in trying to dig out my calipers to measure slabs off of the three saws that I slab from. In point of fact I like slabs a bit short of .25" and with my one blade things end up at .22" using 6 turns of the vice cross thread. I am convinced that there is a thread count difference between my old HP and my old home made machine. Part of it could be kerf as you point out. Its hot, but in my new shop which is insulated, and stucco and which has occasional shade, it runs to tolerable temps even when its 95 or so outside. NO AC for me. I'm green.
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Nov 15, 2024 17:44:51 GMT -5
Nov 15, 2024 17:44:51 GMT -5
