One upon a time, as a knuckle-dragging primordial chopper builder, I used an angle grinder to cut sheet metal in my garage. I was too cheap and stubborn to buy this tool.
Even with a respirator, some dust would slip into my nose: taking zinc, hexavalent chromium, and who knows what else with it. It would also leave a fine layer of metal dust in every crevice of the room and my person. I would periodically blow my nose to purge the blood and metal, then continue on.
Now, with my Milwaukee double-cut shear, I almost never use my angle grinder. I can hardly imagine a time when I would do something so utterly ****** on a regular basis.
Even better- the Milwaukee is handy for cutting cardboard mockups of whatever deranged sheetmetal design I want to extricate from sheet steel. Don't try that with a diablo wheel.
Please get one of these if you use an angle grinder with any regularity. You can be dumb or stubborn, but please don't be both.