I've got over 50 EPP planes and have had many others. I've owned a good portion of the GWS and Multiplex planes as well. I tried all sorts of glues for EPP and Elapor through the years.
CA has always been a pain.
A couple years back, I got a EPP 3D kit that came with 3M's EPP glue, its 4693H, made for EPP.
I used it on my Boomers(over 100 of them) and never had a joint fail.
So I tried it more than a year ago on a Multiplex plane. I scuffed the joint with some fine sandpaper to remove the shine, and rubbed a film on both sides and stuck it together like GWS glue. I tested it on some broken parts.
I glued it and let it sit 2 hours. It would come apart if you really pulled on it, but was generally flyable. I then glued up some pieces and let them sit for 2 days. They would not come apart at all. You just distroyed the foam. I took some out to show the boys I fly with, they were amazed.
Its also works on the SuperCub and Stryker if you don't pile it on. It can be used as a contact type or just put it on like a thin goop and let dry.
Its a little hard to find, I usually do a on-line search to get the best price. One tube does lots of planes! Butch
Note; Spec's
Detail Specs Spec Docs (PDF) Info
Description
A clear, elastomeric adhesive with exceptional adhesion to metal and plastic. This adhesive is unique in its ability to bond hard-to-hold materials like polypropylene, polyethylene, and high-impact polystyrene.
Exhibits high immediate bond strength, long tack range, and contact bond properties. Good resistance to water and aging. A thicker verison of 3M(TM) Scotch-Grip(TM) Plastic Adhesive 4693
**Heres where I just ordered some from:
http://www.jamestowndistributors.com...dhesive+4693H#