Hi, this mould is made from high temp epoxy and oven for 17 hours following the data sheet. 

I think I could of took more care in mould prep which didn't help. But it had about 8 coats of easy lease and struggled to out. Now the mould has carbon print through and cracked gel?

Carbon use xpreg xc110 oven cured following standard curing cycle.

Edit : carbon was in the mould over night before going in the oven as it was getting late and could fix leak in the bag.