Latex-based contact adhesive works well, if not after the high-strength of epoxy resin. This is probably what Robo' was referring to. DEFINITELY prepare the sheets into skins big enough to cover whole top or bottom surface, and PRE-SAND the wood so you don't have to do it on the wing - causes flat spots. Aliphatic resin, used sparingly, is a good sandable glue for joining the sheets.

When you do it, sheet top and bottom in one go, and weigh the lot down to dry in the foam cores' "beds" they were cut from.

It's actually pretty easy - practise on foam tailplanes first if possible!

Cam