Its a good idea to use fiberglass for strength, but you gotta make sure your paper can withstand all that resin. A heavy cardstock will do the trick (200g per meter aka 200g/m). I havent been working on my armour lately beacause im low on funds, and needing to get a job, but as soon as i get my coffers up fiberglassing resin, fiberglass mat and bondo are on my top buy list. Also a dremel tool and some new sandpaper xD. If anyone has any suggestions for me to change my buying list go ahead, as we are all here to help eachother out xD. Cheers! In regards to what your talking about with the fiberglass tape, everyone feedback seems to be bad, except to use it as either strengthener for the actual coat, or to fill crevices xD.