Also dont start two of the same noob question thread. Also, fiberglassing armor is not related to casting.
"The Casting" sounds like a work in progress thread about casting armor.
This is asking how fiberglass works.
You started two threads to ask us how it works, after a member has already told you to read the stickies or use the search bar,
and it is most likely already on the packaging of the fiberglass and resin.
I dont really consider you a member, I was thinking more along the lines of a spambot.