Just opened a can using a propane torch. Just play the flame over the solder & scrape it away as it melts. grab a corner & start pulling. Had it open in 5 minutes, no cuts, no scars, no swearing, no sweat.
When the can was sealed, they had to heat up the can for the solder to melt to the metal & seal. Same heat to go in reverse & open it. melting point of solder is 90 - 450 F., flash point of paper is 451F, cardboard maybe a bit higher.
No scorch marks on cardboard inside.
wow what a great idea


















































