Silicone Casting
With my wooden mould complete I was able to use the vacuum former to create a plastic shell that matches the shape of the owl heads. I'm going to cast that shell with a silicone compound to make an exact replica of the wooden mould and I'll be able to make two shells from a single sheet of material. I used a large block of foam to fill some of the void in the middle of the cast, this reduces the amount of silicon I have to use. Last time I tried this though I forgot that the foam would float in the silicon. This time I laser cut a base board for the mould, once filled the foam will float up against this and be held in place. I put some pour holes in it so that I can fill it from the reverse, but due to a combination of the foam obscuring the holes, the holes being in the wrong place and me being generally rubbish at pouring I ended up making quite a mess of the board. It was all good fun though, you can see that the silicon copy came out well and has been already pres...