: I am looking to make a repair to an older boat and the temperature has cooled
: here lately. I know that bring the temp back up to 70F or so will help the
: epoxy cure faster. But what if I bring it up to 90F? Or even 120F? Will I
: weaken the repair?

: This is on the portage yoke for a 100# boat, so it is important it is strong.
: Which is why I can't risk the epoxy not being fully set before I go.

Epoxy does set and cure faster at higher temperatures, however it also gets less viscous (runnier). So match the temperature of the epoxy the surface and the space before application of the epoxy. If the wet epoxy is heated in place it will run (except if it is absorbed say into wood).