Clamping to the table of my drill press and band saw were frustrating due to the ribs on the undersides. Also the drill press has that handy blood gutter that collects chips and makes it inconvenient to slide a vise around between holes.
So I took the tables off, flipped them over mixed up some auto body filler and filled between the ribs. Also filled the gutter. Big improvement!
Not sure what to do about the table saw wings.