Making a three piece mould including a core

Page 5

One of the channels exits the core at the head of the core. Since the mould is filled while it's upside down, we pour silicon into this channel and air can escape through the other channel (which exits in the chest) as the silicon fills the mould. Here're some pics of a cast straight out of the mould.

Here're some pics of the final painted piece. More info here.