Cutting glass with a grinder involved a paper suit, respirator and huge cleanup. Now with this osilating cutter, cleanup and containment is holding the shop vac nozzle a few inches from the blade.
I glass wrapped all my limber holes for a couple of inches before installing the stringers and bulkheads. I was carefully trimming mat and roving to fit them taking my time and cursing a lot. Now I can just glass over them, come back and cut the glass skin off and sand them smooth. I was coming back to clean up the mat spider web anyway so I can gelcoat.