Casting metal parts from 3D-printed plastic or Styrofoam models is all ... so it’s refreshing to see a casting project using silicone molds to cast low-melting point metals.

As a bonus, molds treated with an acrylic dip do not need a release agent: silicone simply refuses to stick. As usual, [Jan] provides plenty of photos and details of what did and didn’t work as ...

The innovation of silicone ice molds was surely a welcome one ... makes releasing ice much easier than it is with standard hard plastic trays, which are prone to breakage from being twisted ...