I believe the best solution was where somebody took a couple of ABS (plastic) pipe fittings ( floor ring for toilet (closet flange), short length of pipe and a cap) and put it all together and and cut hole in bench top to create a "well" filled with water (warm?) to create a "cold sink" to pull away cold from canister and keep it from freezing...
"Closet flange"
"Pipe cap"
Glue (cement)
Keep in mind diameter of MAP-PRO cylinder and pipe diameters... "Fat boy" cylinders may pose a size problem when purchasing "pipe parts"... Tall, narrow (16oz) cylinders measures about 2-7/8 out side diameter so choose pipe size accordingly (4 inch?)..
Using a heating pad around canister may stop freezing up, but may also increase pressure and cause canister to rupture (I seriously doubt it. But why take the chance) and or a increase in pressure will cause flame to vary and cause you more issues...
Torch safely...
Dale
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