Not that this will help, but my grandfather refinished floors for a living, and had huge equipment circa 1940's, including a large disc floor sander and buffer. My grandmother decided to buff the floors one day. When she started the machine, it threw her across the room. All my grandfather said was something to the effect of "serves you right, I told you not to use my floor machines". I think today's machines are smaller and easier to handle, but I don't have any hardware floors, so what do I know?
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