I used CA glue to bond two parts of a model together in preparation for making a mold of it. I used Smooth-On Mold Star 20T (platinum cure) silicone. In places where the CA glue was exposed on the outer surface of the model, the CA glue appears to have inhibited curing of the silicone.

Does cyanoacrylate glue inhibit platinum cure silicone, or specifically Mold Star 20T? Can I avoid this by using tin cure silicone, such as Smooth-On OOMOO 30?

  • 1
    This gets into the material chemistry. Other people might have experienced a similar effect, but your best bet for technical information and workarounds might be to contact the manufacturer. – fixer1234 Dec 7 '19 at 23:08

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