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> […] presumably because silicone bonds to itself […] Silicone absolutely loves silicone. If you pour silicone into a silicone mould you end up with one piece

> […] 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.

dTal 5y ago
Yes, that's why I typed that. The question is, why make a silicone mould in the first place?
- yarcob 5y ago
  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.
  - BillieRuben 5y ago
    this is the reason.
genewitch 5y ago
Even after it's been set or cured, two silicone things will kind of melt each other. It can be disturbing.