Yes thats right im careful would never use any kind of direct heat source but its winter here and so cold i had to warm them up somehow so 15 mins on lowest electric stove heat setting in a half pot of water did the job nicely, im glad you said that as folks need to know those cans are full of volatile chems like acetone so i believe etc, im no expert but know enough usually.
Cant imagine being burnt by a can of acetone explosion.
Thanks for your reply sir.
david