I've worked with some Hexcel ambient cure resin on glass, very much cured in 24 hours, design strength in 3 days, ultimate in about a week heated in the sun to help. Not a lot of difference between design and ultimate. How strong do you really need it?

Yeah, amazingly exothermic. Had to mix in small batches for a reasonable pot life and still had to work fast on hot days.

Hitting the proper ratio was more important for strength, and the resin was quite forgiving in that respect. But still we're not building aircraft here.


The key elements in human thinking are not numbers but labels of fuzzy sets. -- L. Zadeh

Which explains a lot.