I have attempted to cast a model using Easy Composites' Fast Cast Polyurethane Casting Resin. The cast failed as the resin did not fully cure. Half the model cured but the rest came out like thick honey, see image above. I'm not sure why this happened, but my immediate problem is, how do I clean the uncured resin goo from my mold? The mold is made of RTV silicone.

You definitely need to shake the fast cast tubs to ensure they are properly mixed.

There isnt much you can do to slow the cure down really, other than work in smaller sections or work in a colder environment initially.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant