I use a Hot plate to heat my Plastic, I have been doing it this way now for 10 yrs, never had any problems until last yr, don't get me wrong, I'm very busy have used up 5-6 single & double hot plates, but thats to be expected pouring about 18 hrs a day 6 days a week.
But last year I was making some 3 1/2 " Tubes for a customer, ( I dip them) and I don't remember what happened but I spilit my pot, it had roughly 1 3/4 Cups of 350 degree plastic in it, thank the Lord, most of it did land on the floor, BUT, Some did land on me, I have a 3rd degree burn on the inside of my right leg,it start about 6" above the knee, to about 6" from my ankle, then a 2" strip across my right foot, and about 97% of my left foot, had to have skin grafts done.
I was dumb, I was wearing shorts, and no shoes or socks, I have been pouring like this from day one with out any problems, NOT any more.
What I'm getting to is, for you Newbies, don't be dumb like me and press your luck, I know wear blue jeans amd socks and shoes, yes I was lucky for 9 yrs, but trust me you don't want to go there.