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this post was submitted on 11 May 2026
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I've never needed release agent with platinum-cure silicone as it's not stuck to anything except itself unless it was porous. I have needed to lubricate bits of moulds that would have had too much of a vacuum if just pulled, though. Also, when I initially referred to coating the mould, I didn't mean a release agent but rather something like PMMA (acrylic) dissolved in acetone to protect the silicone from the resin as described here: https://blog.honzamrazek.cz/2022/07/preventing-platinum-cure-silicone-cure-inhibition-in-resin-printed-molds/