Epoxy in the sun

[W.A.R.]

I know Barry has said leaving epoxy out in the sun for at least 4 hours trumps all other drying methods.
My question, do we still need to keep heat on it for 24 hours?
Also if sun drying speeds everything up, does this also cut down the number of days in the 7 day window?

 

[Barry]

4 hours will not kill the open-coat time as we do this in the cold a lot to get the epoxy curing.
In a perfect world you would at least have heat to 65 that night.