That bri gs back memories. About a hunnert years ago, my first house, washing machine was in the garage, pipes in the uninsulated exterior wall, north Texas. They froze and burst. I figured i could fix them, just needed access to them. Never had cut sheetrock before... how do you cut something as tough as plywood? No internet back then, dont need to ask for help, i can do anything. You would be amazed at the amount of white dust a circular saw creates in a small garage cutting gypsum. Ok, maybe you wouldnt be surprised, but i was.