I'm buillding mine out of posterboard and hot glue.
any ideas on how to make it more stiff? its really flexible right now.
i haven't covered the entire thing up because i know someone in the industrial design department at the Rochester Institute of Technology and he says that i should just apply some fiberglass resin to the underside of the paper (inside the jet pack) to eliminate the need for sanding on the outside. i'm not sure what to do.
has anyone had this "flexibility" problem as i have?