Say I use liquid blue stuff or something to make a mould for a model - what materials other than greenstuff are easy to use as domestic mould fillings for usable models/parts?
Fimo (and other air dry clay) Resins and epoxies plaster of Paris, water putty, ect... Other 2 part putties, brown stuff, grey stuff, etc... metals
Hay sometimes googlefu is weak never an issue to ask those who might know the right word combination to find what you want.