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Re:3D Printing Sex Toys by Freak_NL on Sunday October 10, 2021 @02:22PM (#28820734)
> […] presumably because silicone bonds to itself […]

Silicone absolutely loves silicone. If you pour silicone into a silicone mould you end up with one piece of silicone — which now includes the mould. So a barrier is absolutely essential.

Re:3D Printing Sex Toys by dTal on Sunday October 10, 2021 @02:30PM (#28820810)
Yes, that's why I typed that.

The question is, why make a silicone mould in the first place?

Re:3D Printing Sex Toys by yarcob on Sunday October 10, 2021 @03:55PM (#28821438)
I guess silicone is a good material to make a seamless mould of a smooth object. Since it's flexible you can remove it from the original object without cutting it.
Re:3D Printing Sex Toys by BillieRuben on Sunday October 10, 2021 @05:18PM (#28822073)
this is the reason.
Re:3D Printing Sex Toys by genewitch on Monday October 11, 2021 @06:55AM (#28826906)
Even after it's been set or cured, two silicone things will kind of melt each other. It can be disturbing.