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Lapidary / Gemstone Community Forum
June 16, 2019, 12:41:01 am
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Resin coating slabs

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Author Topic: Resin coating slabs  (Read 326 times)
guest5039
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« on: October 12, 2015, 04:12:37 pm »

I was using Enviro Tex resin to coat slabs. I followed all the directions religiously. They looked great after an hour, but the next day the resin had moved so that there are areas where it is think and areas where it is missing.   The resin from the missing areas all dripped off. They were flat and no bubbles. They look terrible and are useless as is. Any suggestions on how to fix the messed up ones and avoid this problem in the future? Thanks.
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slabbercabber
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« Reply #1 on: October 13, 2015, 05:23:58 am »

Sand it off and spray clear enamel or lacquer.
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light house jack
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« Reply #2 on: October 13, 2015, 07:01:24 am »

I have used the same product. I suggest cleaning the slabs with denatured alcohol. Use a hair dryer on the slabs after coating. I did a counter top with this product and the hair dryer helped with the bubbles and gave me a flat flow.
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john likes rocks!
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« Reply #3 on: October 13, 2015, 07:53:37 am »

It will help if you can get the slabs level, maybe by turning some screws into a piece of wood to make a level bed to place the slabs. That is how a guy I know makes them.

 Good Luck!
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ileney
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« Reply #4 on: October 13, 2015, 12:00:12 pm »

Please excuse me if this is an ignorant question, but why do people coat the slabs with resin instead of polishing? Is it to show how they will look when polished for potential buyers purchasing them for cabbing or is it in lieu of polishing for some reason? Again, sorry if I sound ignorant.
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light house jack
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« Reply #5 on: October 13, 2015, 12:40:02 pm »

If one does not have a flat lap, it is an easy alternative just to coat the slabs for display. I happen to own an 8" flat lap, but it will not handle the 14" slice of Brazilian agate which is now in my living room on display.
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Yukon Jade
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« Reply #6 on: October 13, 2015, 08:41:05 pm »


 When I first started in the hobby in the 80's I was making clocks which consisted of the quartz timepiece mounted in a section of wood with rock slabs on it which I covered with a 2 part polymer resin. My wife has the last one I made,I used two slabs of yellow Brazilian agate one reversed and a narrow piece between to be the body of what appears to be a butterfly on a red background.
  I then jumped to a 36 inch round coffee table with broken pieces of abalone shell in it,a major job with many layers of resin hoping the mix was correct, heating it with a heat gun to remove bubbles and get the resin level.Over the years the resin yellowed from the sun and I put it in the garage ,over the winter it cracked due to freezing. The background was black and it was a real beauty!
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