Soft Sculptex modelling clay
Sculptex is a non-toxic, non-hardening modelling clay that is sulphur-free and non-contaminating, an ideal alternative to sulphur-based clays, which are incompatible with some mould rubbers.
Sculptex is also great for making mould walls as it doesn’t stick to silicone. Our tests show that Sculpex works better than Plastilene and Newplast in this regard.