Good idea, I just tried it on one corner and got a lot of stink and a little bit of tarlike gunk out of the crack betwixt metal and glass. First I pulled all the tape off the metal band . . .

. . . so there wouldn't necessarily be flame and a lot of smoke involved in the test.

Maybe I'll fire up the compressor when I get home from work tomorrow and grind out the spot welds that hold the band together at the seam.

Between that and the heat gun, maybe I can get it off.