ive posted a topic before i had where shrinkage so bad that i couldnt remove the part without breaking the mould. And even then, the part wouldnt fit in the mould because the mould was too small/tight
I now plan on not just using csm but using a lighter woven fibreglass in 1 or 2 layers so i can safely remove part from mould then check there is no/little shrinkage by refitting the part back into the mould. Once i am happy, apply multiple layers of csm to build the thickness of the mould.
I hoping this should cure my previous issues. I have read online that too many layers straight away can cause shrinkage. Also, on my first attempt, i could of added too much hardner (i was working in the sun, but everything seemed to cure pretty quick), would that affect shrinkage?
-undercover