The little people in 4mm scale.
Creating figures in 4mm scale is a bit of a hit and miss affair for me. When sculpting the face, some figures turn out great, while others turn into real monsters. The initial sculpting is done in dental plaster or chalk from which a silicone rubber mould is created. From this mould is cast a white metal figure which is further detailed to become a 'master figure'. If multiple copies of the same figure are required, then a second silicone rubber mould is made from the 'master figure', and multiple copies taken from this.
A process is also illustrated on how to make a silicone rubber multi cavity production tool for use with the centrifuge casting method. Most, if not all of the components used in this process are either home made or modified from other components, for instance, two parts of the centrifuge were actually once part of a mini alternator.