Re: Arrow TV show face mask sculpture.
Got the mould finished and cleaned up ready to go, should have a photo of a casting later on today.
Here's the moulding process for anyone interested. This is what is known as a poured "matrix mould", also called a case mould or jacket mould over here. The idea being that you create the silicone mould with an even thickness so it sits perfectly in the jack so if a little shrinkage should occur, it shouldn't distort the mould. Or as I like to call it "the movie way of moulding" :lol
As above, clay is cut to a consistent thickness and laid over the sculpture. Keys are added around the edge and the center to keep the mould sat correctly in the jacked.
Once its fiberglassed, it pulls away nice and cleanly.
Then that clay is cleaned out (but saved to workout the volume of silicone needed) and bleeder holes and a large pour hole is added.
Once this is all done, I sprayed the the sculpture with a satin black spray to give the final mask the sheen I want. Then I hot glued a water bottle to use as a pour spout and hot glued all the edges to prevent leaking. The small bleed holes allow air to rise and exit the mould as the silicone is poured, these are plugged with screws or clay once silicone has risen and starts to leak out of them.
Plugged mould with silicone poured.
Then you open it and here is what you have, a perfect mould that will sit perfectly in the jacket as it was injected around it rather than brushed on over the silicone.