I had the dreaded red liner. I decided to hit it with the weed blaster. Oh boy was it loud! The ol' miss came out and timed how long it would take in one section to turn it that ashy pink color. Approximately 90 seconds. As a test, I immediately hit it with a 2500 PSI pressure washer. That big circular blob in the upper left is just that. (NOTE: There are lots of places where the propane burner peeled the liner right off. Had I taken the time, I probably would have just hit it with the burner to peel it off but, well, I was impatient. And a little inebriated.)
So I'm thinking that heating it from the outside might actually release the chemical bonds from the steel. Mind you, I'm not a chemist so for all I know, the red liner may have just said "f u, its getting hot, I'm out of here."
Here's the Mrs's taking over torching duty while I go have some whiskey and find some beers.
After we blasted the outside so that the inside was all ashy pink, I hit it with the pressure washer again. It got quite a bit out but I still wasn't satisfied. I decided to risk it and throw in all the scrap plywood I have, along with 1/3rd of a bag of briquettes. Woah.
Glad the neighbors were not home to call the fire department on me (they're a bunch of squares). After the burn, there is still some pink in there. I may hit it with the orbital sander but my gut tells me that if after everything I did and the pink still wont come off, I'm good.
Lesson: Red liner is bad, but not as bad as people made it sound. Hitting it from the outside is definitely the key. I think those that have tried were hitting it from the inside or didn't hold it in one spot long enough. If (when) I do this again, I am going to bring it somewhere that I can start a massive fire. Then I'd throw it in the fire and fill up the inside with hot coals.