The rubber mould has a core inside to allow the casting of a thin rubber wall. Colleague Padma Koster is seen lining the mould of the body with 6mm of clay to allow for the thickness of fur that will be applied later on in the process.
The mould making materials, silicons and polyurethanes, come from FormX, in Amsterdam. FormX stock the Smooth-On range of casting products. Smooth-On Have been developing their materials so that drying times, pot-life, strength, flexibility are optimised so as to ensure an efficient and easy casting process.