RE: foam wing adhesive
Huck1199. Some years ago 3M changed the solvent in 77 Spray Adhesive, and so it now WILL DISOLVE STYRENE foam. Styrene is the expanded bead open cell foam most commonly used for model airplane wings. DO NOT USE over the counter 3M 77 Adhesive on your styrene foam wings, without at least testing it on a scrap. The good news is that you can order foam safe 77 Adhesive from 3M. Even better, most craft stores like the Hobby Lobby chain, and Michaels have FOAM SAFE spray contact adhesive. Those of us who have been in this hobby for a long time have used our share of spray contact cement. We have learned that if you are lucky to have an airplane last a long time, that sometimes the glue will let go, especially when exposed to heat. A much better choice is laminating epoxy. Vaccum bagging is the preferred choice, but we layed up many a wing with magazines, books, cinder blocks, and fuel cans stacked on them. Greg