Chavant NSP
Sulfur-Free Modelling Clay
Chavant NSP Modelling Clay is a non-sulphur plasteline used widely in fine arts and special effects applications. Chavant NSP is characterised as being waxier and somewhat tougher than other non-drying modelling clays, and is available in three stiffness ratings: soft, medium, and hard.
Because Chavant NSP does not contain sulphur, it is compatible with addition-cure (platinum) silicone. The plasteline can be melted around 85°C and poured into a silicone or alginate mould.