I use 3M "High Strength 90" "high heat" spray on contact glue for gluing down the fiberglass strip and reverse taper onto my forms. Its said to be better than 3M 77. it has worked fine so far. I assume the 90 would work on the plywood laminations too, I would still use at least 100 screws with it. I built 4 blank forms in 2009, I had a gallon of tite bond 2 glue and used it on the plywood along with drywall screw's. If I need another form I will try to find LVL to use.