I am need of some help with fibreglass work. On both of my costumes, I will need to enlarge my thigh and shin pieces. I will have to cut an opening in the thigh and create a gap in the armour and then fill it with fibreglass. On the shins, I may split the half of the piece and do the same type of expansion, or I may extend the fibreglass at the back to allow the 2 halves to meet and close.
Has anyone done work with fibreglass that can outline how I need to achieve this?