Gorilla Glue! Did my first foam wing last year and it went very well. Spread the glue on the wood and lightly spray water on the foam and slap together and place into the foam bed and weigh it down overnight. Good use for all your old airplane magazines! The glue foams a little and sticks like crazy. Doesn't cost an arm and a leg and does not smell bad. Excess sands easy.
Skyhawk