Any thoughts on acceptable room temperature range when applying and drying clear coat?

I think right about 70 is best. If it gets too cold , the cure takes forever and its a long time for dust etc to potentially gte on. when its hot , like 85 , the epoxy kicks off too fast while applying.

I did a boat rod w/ Flexcoat a week or so ago when my basement temp was around 50F. Not the idea temperature, BUT it cured ok. Once it set I took it upstairs where it was 70F for a couple of days before I did a 2nd coat and then repeated the process, but let the rod upstairs since I completed it.

Humidity was low 30s in basement. I used an alcohol lamp to soften the epoxy and to remove the bubbles. It ran on a home made rod spinner for several hours while it was setting up.

This isn't the most ideal thing to do, but it did work ok. Many people made drying boxes that are closer to 70F +.

My drying box gets up to mid 80's now (basement temps are about mid-50's), and over 100 in the summer. 70 degrees is "normal" temp to cure, anything under takes longer, anything over it cures quicker.

Epoxies such as Glass Coat and LS Supremem cure extremely quickly in higher temps. When I say "cure" - I mean the time it takes for you to turn off your turning motor. About 3 hours each. LS cures hard enough that on an underwrap, 6 hours after applying epoxy I was wble to do my overwraps.