[Katherine Swift]

This question comes from one of our blog comments:

Hello, I have been having a problem with my resin. My pieces seem to be fully cured, they harden, retain their shape, and I cant make imprints on them. However, after any very small amount of heat is added to them again, such as holding them in my hand for half a minute or trying to sand down the edges, they become rubbery and their shapes distort. Is this because of moisture? Are they just not setting properly? I would really appreciate your thoughts on this problem. – Mandi

[Katherine Swift]

Mandi,

Would these happen to be thin epoxy resin castings?  Epoxy is not a hard curing resin (compared to some others), so I would expect that if they were thin, once you added some heat (from your hand or the friction of sanding) they would start to bend. I have also seen this happen with resin charms made with EasyCast resin.

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