The bumper was painted black and I wanted to restore it back to its galvanised coating, which is the original finish.
The bumper after jet-washing.
This was the cheapest paint stripper that I could find. Took two attempts, but the result was pretty good.
I'm happy with the result. I may have it re-galvanised, but that will all depend on the available budget. I'll re-attach it using galvanised nuts and bolts.