Nah, it's all good. Don't have it boiling hot or anything, you don't want to raise the pressure in the can too much, just enough to warm the can
a little. Certainly don't apply a flame to the can

. Dry the can when you take it out of the water too otherwise when you shake the can guess where the drops go

usually only after you are almost finished

. Murphy's law is bound to strike. I swear it goes on soooo smoothly when warmed a little. Don't take my word for it - give it a go

- what have you got to lose. I'll take some photos tonight of my supercheap painted hubs and post 'em tomorrow.