1947-1948 The legs had wooden knee joints
1949-1969 The legs of the standard puppets were made of wood with metal strip knee joints.
LS puppets had legs made of hollow bamboo which were threaded together.
1970-1980 The wooden legs were replaced with plastic legs jointed at the knee but held together with a black cylinder pin.At this time some puppets also had barrel legs made of a soft mottled plastic which were held together with thread
1980 onwards. Legs were made of a harder plastic and that were threaded.
The early wooden knee joint
The metal strip knee joint
The wooden string knee joint
The later plastic knee joint
The bamboo or plastic tubing knee joint