Home / 0G4180 Grinders, Carbide Insert, Automatic CNC / Wendt WBM221 Double Disc Grinder – Liberty #39433. Wendt WBM221 Double Disc Grinder Liberty #39433 . Liberty Machine # 39433 Category 0G4180 Grinders, Carbide Insert, Automatic CNC Make Wendt. REQUEST A QUOTE. Our large WBM 221 twinspindle surface grinding machine is a great success. Ever since it was first .