Hey, I'm starting my armor, and I'm thinking of stacking couragated cardboard, and then cutting it with xacto knives to rough shape, and then putting bondo hair, or the regular type( I think the green stuff is easier to sand?)putting that over the cardboard, and then sanding that to final shape. I have a dremel so sanding won't be that hard. I'll use the cardboard to save on bondo and weight, basically having a cardboard core, with bondo shell. I've looked at a lot of threads on here, and the fiberglass/ resin method is big, is there a big advantage to it compared to what I want to do? I've used bondo before so I know what I'm getting into, but does anyone have any suggestions?