A cutting tool including a base having a workpiece support surface for supporting a workpiece and an annular, upwardly facing bearing surface. The cutting tool also includes a turntable mounted on the base for rotation about a generally vertical axis. The turntable has a workpiece support surface and...http://www.google.de/patents/US6431042?utm_source=gb-gplus-sharePatent US6431042 - Turntable mechanism for a cutting tool
