Hey guys let see if you can help me, I am trying to skinned a product, with carbon firbre, I was told to add catalyst to epoxy. Do this really needed? what is the sense of adding catalyst to epoxy if the epoxy is a laminar glue

i have a piece i cast that was not fully mixed...a year and a half and it is ok to handle but if it gets warm it gets soft and pliable.
for CF that is a FAIL and a huge waste of money and time.
yes mix like a madman and double cup and new stick it.

CarbonFiberCreations