RE: G.P. PT 40 MK 2 TRAINER BUILD
I use 30 min epoxy for laminating the parts. 5 min epoxy is brittle and not as fuel proof as 30 min epoxy.
The PT40 can be an excellent flying plane. You will most likely want to use the lessor dihedral amount? Seems like few people use the full dihedral.
Enjoy,
Jim