help removing fiberglass

The main trouble is the fiberglass we had sprayed in about 4 years ago by my brother. Some spots wore through really fast and others are still 1/4-1/2" thick, and there is a worn out metal wear plate underneath all that in the spout.

I want to get it all out first, but what's the easiest way to remove the fiberglass? Flame? Sandblast? Chemical? Swearing? (ok, so I'll still be doing that part)

We had it done because my brother did the spout on our other chopper a few years prior, and it worked really good and still looks perfect. This one just didn't hold up as good. He worked at an autobody (mainly fiberglass) shop at the time so it was only $5 or $10 for the materials he used.

I also posted in the paint & body work board in case any of those guys have much experience with fiberglass.

Donovan from Wisconsin

Donovan from Wisconsin

FWIW: I know there is no way the smoke was good for me, but it's better than being expopsed to hours and hours of the dust while grinding on it, and it's only a 1 time deal, not like I work with it everyday. Someday I may regret removing it this way, but probably not. It was fast (1/2 hour or less) and non-itchy.