Pro-Create putty

There's a new sculpting material called Pro-create, it's made in the US and has been developed with the help of miniature sculptors. That is, during the development samples with different formulations have been sent to several sculptors worldwide which included people like Jeff Valent, Werner Klocke, Stefan Nieheus, Chaz Elliott and other profesionals (oh, and an amateur: me ) which have been giving comments to finetune it. Mouldmaking was also tested.

Full details in the comments link