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Old 01-28-2019, 05:37 PM   #11 (permalink)
 
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PR shrinks as it cures. So a 12 inch long or diameter piece can shrink 1/3 of an inch or more when cured. It will pull away from the wood. Epoxy shrinks less. Use it.
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Old 01-29-2019, 12:48 PM   #12 (permalink)
 
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I didn't realize PR shrunk that much. I've only used it in pen-sized molds. I'll stick to epoxy (Royal Palm is my first choice) for hybrids then. I was just doing my diligence to see if there were cheaper viable alternatives out there. I can still selectively use PR for pure resin bowls, or, also, I have a bunch of mini-pine cones I want to use in some resin bowls.

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Old 02-22-2019, 09:36 PM   #13 (permalink)
 
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If you are wanting to conserve resin I have watched a few videos where the turner used 2 plastic bowls that nest together. He then hot glues the material he wants to cast to the sides and bottom of the smaller bowl then nests them and uses tape and / or weight in the smaller bowl to prevent float up then pours the resin between the bowls. Hope this helps.
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