Red8 said stated my problems to the T. I am heating in a shed, but it is not cold in there. I dont know if I stated this also, but the plastic sets up at the mouth of the poring cup and prevents the plastic from flowing easily into the cavity. Can anyone suggest a good pouring cup. I am heating the plastic and pouring right out of the same cup. Should I not do that? Should I have a seperate heating cup and pouring cup? If so, do I heat the pouring cup on a seperate burner so the plastic doesn't set as soon as I transfer the heated plastic from the heating cup to the pouring cup?