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

Thank a lots everyone, I finally received my carbon firbra it look cute.

I need other help.

My question is what is the best product to coat the polyerster foam before applying epoxy. I want some thing that can grip the polyerster like the car's body work plaster