I just dealt with a gallon jug of glopped up resin from a supplier I guess will remain nameless (not B&B). The pump is long gone, filled with solidified glop. The third of a gallon or so that remains in the jug is gelled. I suppose I could try hot water or microwaving, but I did that once before and it took hours to decrystallize a smaller amount using hot water baths. I only need a few more ounces to finish up this project. So I ordered a pint from the supplier, even though I'm paying for hardener I don't need. This is a project and resin I inherited from a friend (long story). It's a common problem up here in the north. Our basements likely don't stay above 60 in the winter, and most of us find our living quarters are probably not above 65, so there's really no place to keep the resin warm for months on end absent building a special little heat box. Even the dog doesn't get that luxury. This seems to be a problem especially with 2:1 resin, not with 5:1 (West).