Bed Liner Removal?

[pwrstroke6john]

I have a superliner brand spray liner on a steel square tube rear bumper of mine and it wasnt sprayed on thick enough in areas so its rusting through. I have no real good idea on removing the spray coating though. Does anyone have a better idea then throwing the whole bumper in a fire or taking a power chisel to it.

[66Bronco]

Grinder or media blasting. That's about it.

[RibbeRacing85]

you could try sand blasting it