The materials I use my self are 110LB card stock, and large bottle of elmers glue, either a tooth pick or something about that diameter to apply the glue to the tabs, and an exacto knife to cut out the pieces.
That's for the prep, For resining I use aqua resin mostly and when I really need reinforcement i use Automotive body repair resin with fiberglass mat, And some bondo to smooth everything out.