I went back to my 6oz of mixed epoxy/resin in a plastic container in about 30 mins at about 20deg and it had hardened and melted the plastic cup. It hardened faster than the part that I was making in the warm shop. So, I guess the mass of liquid had already started the chemical reaction and had enough internal heat that it wouldnt slow down.
Interesting.
I bet if you use the slow hardener, the exothermic heat generated wouldn't be extreme enough to overcome the ambient temperature.
