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- This topic has 8 replies, 2 voices, and was last updated 2 years, 5 months ago by
Katherine Swift.
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June 15, 2016 at 5:41 pm #5788
Diana
GuestI have had problems with two pieces where the top of the dome (about dime sized) did not cure. The rest of the pieces look fine. I thought that maybe there was something wrong with the mold, but I tried curing using a very small amount of resin using the same mold and it came out perfectly. Any ideas about what the problem could be?
Thank you.
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June 16, 2016 at 12:16 am #5792
Katherine Swift
KeymasterWhen you say top of the dome, are you referring to the top on the surface exposed to air or the top of the dome that was immediately next to the mold surface?
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June 16, 2016 at 1:39 am #5794
Diana
GuestI’m talking about the part next to mold surface, not exposed to air.
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June 16, 2016 at 9:54 am #5796
Katherine Swift
KeymasterWhat did you use for a mold release? Plastic mold or silicone mold?
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June 16, 2016 at 12:07 pm #5817
Diana
GuestIt is mold release conditioner by Castin Craft. I used a silicone mold.
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June 17, 2016 at 12:28 am #5823
Katherine Swift
KeymasterI’m wondering if your mold release is pooling and not completely dry before casting. Do you recall seeing a puddle before pouring?
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June 17, 2016 at 1:18 am #5827
Diana
GuestI was very careful to make sure it was dry. The first time it happened, that’s what I thought went wrong, and the next time, it was dry, so I don’t get it. Good news is that I applied more resin to the sticky part and sanded it after it hardened and put another coat of resin over the whole piece. It now looks beautiful. The first paper weight was perfect which I gave to my friend as a birthday gift. I guess it was beginner’s luck!
Thanks very much.
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June 18, 2016 at 5:19 pm #5832
Katherine Swift
KeymasterHmm. I don’t have any other explanations for what could be going on. 🙁 Glad to hear, though, that you were able to fix it!
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August 16, 2020 at 3:27 pm #85525
Katherine Swift
KeymasterThis article explains why resin is sticky: https://www.resinobsession.com/resin-frequently-asked-questions/why-is-my-resin-sticky/
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