RE: 1/6th A-6 Intruder Scratch Build
Ian,
The Gorilla glue is the best option I've found for laminating the foam in place. Just be sure to keep the G glue at least 1" from the outer edge of the formers when gluing the foam in place. It expands a whole bunch and it's better not to have it anywhere near the outer edges of the formers after it cures. Wipe any glue the runs out with a disposable rag before it dries. The other issue with Gorilla glue is toxicity. Hot wiring the Gorilla glue can get you really sick from the isocyanate fumes. (cyanide) Very bad for the lungs!. The foam really only has to be stuck in place until you can hot wire the major chunks from the outside anyway, so it doesn't take that much glue. After hot wiring, you can fill the cracks with the Gorilla glue and final sand to shape. Use Fixall for the skim filler before fiberglassing. It dries 10X faster than drywall mud and won't flake off. Just be sure there are no globs or it can be "FUN" to sand off. Otherwise, It sands about the same as the drywall mud. Great looking project. The A-6 is a classic airframe!
BRG,
Dan