I forgot to caution you about using acetone. Some fiberglass resins can soften and/or melt when acetone gets on them. Also, the acetone is thin and tries to run all over the place (and is HIGHLY flammable). Acetone will immediately melt foam if it touches or splashes on it, so watch your foam wings if you use it. I wouldn't recommend acetone for anything except to thin epoxy, and remover CA from your fingers.

Regards, Les