Hi
 Im starting to experiment casting small(15-20 cm) carbonfiber parts out of a tin silicone mold,40 shore haedness.
I have exprience using both tin(condensation)  and platinum(adition) silicone,and casting polyester,PU resins,foams etc...but have casted little epoxy in silicone molds.
 One question is:
What durability should I expect for the silicone mold?.I know its difficoult to say,as there are many factors that might affect,but maybe someone has experiences to share.
Also,any prefferences between platinum and tin silicone?.Platinum has better durabitly,tear strengh propperties,and heat resistance too in general.Cant this make the difference?
 I need them to be silicone as there are several small undecuts in the model.
Thanks