Further Advice from Doug at Tiranti

Hello Daniel,

The flexible polyurethane foam we supply is buried in the casting section of our website in the sub catagory of polyurethane resins, it comes supplied as a 3kg kit and expands approx. 6-8times its original liquid volume.

if modelling the sculpt' in polymer clay you may be able to produce a mould from it beofre baking, this would make it easier to use a rigid plaster to produce the mould, if unbaked you shouldn't require a release agent.

if however the polymer clay is baked then i would advice you use soft soap as a release on its surface, and also between the sections of plaster mould.

the advantage of using plaster as a mould to swill latex is that it absorbs the water content of teh latex and dries it much quicker, you do not need a release agent as it will slow down the drying effect.

the foam being poured behind should bond pretty well to the latex, it will physically trapped anyway.

as for painting latex the best thing to do is add pigments to the latex and start using it as a paint. if there is a particular base colour you have in mind this can be added to the latex swill in the mould so all you have to do is paint on the additional details.

regards

Doug