Read alot about the diamabrush attachment to a floor polisher for epoxy prep. My floor is in good shape and is pretty even. Saw Home Depot rents the Edco - is this too much power for a pretty basic prep job?
I ended using my 4" grinder and cup to get the spots that still seemed pretty smooth after the EDCO. Probably about 25 pct of the total surface. May have been overkill but that's okay