Ice mold casting prep

I am building a double layer box to pour my silicone ice mould into. The internal layer is made from gloss finish Perspex so it provides as frictionless surface as possible for the silicone mold to be slipped out of when set.

The exterior box is made from off cuts of wood, and is there to provide a water tight seal while the silicone sets. Depending on my tests, I may also use the wooden exterior box to hold the mould in situ while it sets in the freezer.

I cut all Perspex and wooden pieces using the laser cutter for as accurate a build as possible.