You are right Trumpy, angle grinders are one of my most favorite tools, that's why I have over twelve of them at home and two on the truck (nice not having to constantly change wheels, just grab a different grinder). A diamond blade cuts the plaster, wood, metal no problem, just a little snipping and trimming in the corners. We cut into masonry walls with them as well and set flush mount steel boxes. The largest, most powerful shop vac you can fit in your truck with a clean filter is the best dust collection system I've found.