+x Warren (Staff) - 1/13/2020 2:58:29 PMSounds like you left the gelcoat a little too long at the b stage before overcoating. Generally that is the main reason you could have delamination between gelcoat layers.
+x K.C.C - 12/26/2019 4:08:11 PMStarted with some smaler moulds again today .ad some small high temp epoxy moulds made before and they had no problem and I remember I only used 1 layer gelcoat
+x carbon man - 10/31/2020 6:21:04 AM+x K.C.C - 12/26/2019 4:08:11 PMStarted with some smaler moulds again today .ad some small high temp epoxy moulds made before and they had no problem and I remember I only used 1 layer gelcoat How are you getting on now? I hate this system! So many delamination and cracks. I literally can't make moulds using 2 layers of gel or it will crack, chip and delaminat iv tried applying the 2nd layer of gel with every different stage of tack. Now I make just using 1 layer of gel. Moulds are better but still after 6 pulls I got a hair line crack. All my moulds are small like 8 inch. I fear if I make a large moulds it will just break! And I'm having to make them really thick using several layers 650g carbon for backing.Let me know if you have a solution. Thanks