Hummel figurines can never be cast in one piece. The
livelier they are, the more pieces are needed for a
First the clay model
is cut into several pieces, in order to detemine how
many moulds have to be made. Later on, the individual
parts are accurately fitted together in the casting
department. Afterwards, only experts can tell where
the seams are. For the production of the moulds, plaster
casts are made of the individual parts. The pieces are
embedded in clay and covered with plaster.
When the plaster has dried, one half of the mould is
ready. This half has to be smoothed out and it gets
"locks" (notches, which prevent the moulds
from slipping out of place). Now the backside of the
piece is cast in plaster. These two halves build an
accuratly fitting mould.
The hollow space inside
the mould corresponds exactly with the piece of clay.
This very first mould is called the "mother mould".
From the negative mother mould, a positive model of
synthetic resin is made. This is the working model.
This working model is used to produce the working moulds.
The procedure to make the working moulds is the same
as for the mother mould.