Before the part I can only warn: That makes a hell of WHEEL, no kidding as loud as a drill !! And moreover, as an unpleasant high screeching, the Ears, so also at home already completely unusable. And in a hotel, the guests would probably complain in the surrounding ten rooms that because craftsmen so late at night / early in the morning still have to make a noise. Perhaps my copy is somehow defective, otherwise that would have in life is not a 4 star may get cut.