My 600 pound lathe stands on hardwood flooring on top of a sub floor (framed 2 x 4's) which rest on concrete. When twice turning a bowl my feet don't feel vibration and I don't visually see the lathe vibrating. I'm moving my shop to a different part of the basement where flooring will be the same except the lathe will stand on plywood vs hardwood. When making finishing cuts on a twice turned bowl per se, will undetected floor vibration lead to a poor finish? Clearly proper grinding and tool technique are the main determinants of effective finishing cuts but am I better off standing the lathe directly on concrete vs wood flooring? I may be splitting hairs but I'm curious all the same. I know my back will prefer wood flooring but will the lathe, properly leveled, prefer concrete? I searched this topic in prior threads but couldn't find it addressed specifically. Thanks in advance for any clarity and/or suggestions!