- Sep 19, 2021
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Kind of a glue thread so beware. Planning on building my first cardboard HPR, a 5.5in loc big nuke 3E, and I remember reading somewhere that at a certain point with cardboard rockets the epoxy you are using can be stronger than the material it is being used to bond. I normally use aeropoxy laminating epoxy with some milled fiber glass for my fiberglass birds, with 5 min BSI for tacking. Is 30 min strong enough to use on a cardboard bird to the point the cardboard would fail before the epoxy or is aeropoxy a good choice?