: Good advice, thanks! I will have a lamination of sorts but with
: some wood and carbon already shaped properly and sandwitched b/w
: the foam sheets. The foam will be sticking above all these
: harder areas before sanding and the goal is to sand just enough
: to level it with the wood below at the seams. So hopefully, no
: problem with sanding that I can see. Then the whole thing will
: be wrapped in carbon. Watch the space over the next few weeks as
: I will post how my paddle making experiment turns-out.

You will be far ahead if you plan it like there would be no core, paddle full of air. The insulation board has very low impact strength, the material will often fracture just below where it's bonded to the epoxy when stressed. Makes a nice light core to lay up upon otherwise.

Bill H.