victor1941
fully equipped rock polisher
Member since November 2011
Posts: 1,979
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Post by victor1941 on Apr 9, 2017 10:41:58 GMT -5
I have used the acetone/epoxy mixture with the inexpensive Harbor Freight brake bleeder connected through the top-lid of a mason jar with success. The material and liquid mixture is added and a vacuum is drawn once the lid is secure. I keep the vacuum on until the bubbling from the stone stops and then repeated the same procedure the next day. On several occasions, during the second vacuuming, the liquid boiled but no bubbling came from the stone which I assume was saturated. I then shook the containers daily for 10 days and then poured the liquid into another container and air dried the rock contents on disposable aluminum trays for several days. Once the process was finished I then worked the slabs and cabs as I normally do.
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Post by Rockoonz on Apr 9, 2017 14:40:51 GMT -5
If you have an air compressor you can get a venturi vacuum pump with no moving parts, lasts forever, unlike cheap hand pump brake bleeders. If you don't have a compressor, never mind...
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notjustone
spending too much on rocks
Member since January 2017
Posts: 426
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Post by notjustone on Apr 9, 2017 15:47:07 GMT -5
If you have an air compressor you can get a venturi vacuum pump with no moving parts, lasts forever, unlike cheap hand pump brake bleeders. If you don't have a compressor, never mind... old ac or refrigeration compressors make good vacuum pumps.
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Post by melhill1659 on Apr 9, 2017 15:50:52 GMT -5
If you have an air compressor you can get a venturi vacuum pump with no moving parts, lasts forever, unlike cheap hand pump brake bleeders. If you don't have a compressor, never mind... What size air compressor would be needed? I have this one TC 20, 1/5hp. It's small but would it work?
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Post by Rockoonz on Apr 9, 2017 18:48:55 GMT -5
If you have an air compressor you can get a venturi vacuum pump with no moving parts, lasts forever, unlike cheap hand pump brake bleeders. If you don't have a compressor, never mind... What size air compressor would be needed? I have this one TC 20, 1/5hp. It's small but would it work? You would need 40-60 PSI and flow of 0.25 CFM for the smallest venturi pump, an airbrush compressor might not have the capacity.
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notjustone
spending too much on rocks
Member since January 2017
Posts: 426
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Post by notjustone on Apr 9, 2017 19:59:54 GMT -5
you could buy a vacuum pump from hf www.harborfreight.com/25-cfm-vacuum-pump-61245.htmlyears ago I used a refrigerator compressor pump to build a power brake bleeder. they make great vacuum pumps. quiet and they are easy to find. ac unit compressors should work as well.
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fredito
off to a rocking start
Member since May 2016
Posts: 21
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Post by fredito on Apr 9, 2017 20:13:32 GMT -5
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