...you started this! AHEM: Double tapered roller-bearings with lapped diamond-coated finish to 1/4 wavelength of light.Rollers to have soft core to absorb shock,similar to a Samari sword. Rouge lapped cross-feed screw and adjustable nut. Rest room in shop complete set of "American Machinist" circa 1890-to 1968 more time. OK guys, let 'em have it! regards,Ron