I know I should be working on cutting more foam, but I couldn't help myself from building out an IBCrazy spectre from some of the EPS test cuts. Smoothed surfaces with lightweight spackle, and glassing with screen fiberglass and gorilla glue. It won't be as tough as the EPP version but it will be stiff, lightweight and fairly fast with a 300w 1500kv motor from my wrecked 50" wing.
Glued cores, wooden spar and booms with Loctite foam safe silicone caulk;
Aileron servo wiring
fiberglass screen (whole roll of it was only like $6 at hw store)