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Acrylicwookie
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I have been having some problems duping some master models. It seems the duplicated model has a very soft "skin" that sometimes has a powdery residue to it and is not nearly as hard as the master model. I vacuum the air out of green die stone so I'm confident it isn't tiny air bubbles. Any ideas what I'm doing wrong? I'm soaking the master model for at least 10 minutes and I'm melting hydrocolloid in microwave. I've tried the water halfway up method as well as bench cooling and both result the same