Explore the process of upgrading a CNC mill for rigid tapping in this comprehensive video tutorial. Learn about synchronous feed tapping, the limitations of general-purpose AC motors, and the benefits of inverter duty motors for low RPM applications. Follow along as an inverter duty motor, variable frequency drive (VFD), and encoder are installed on a PM-833TV CNC converted mill. Gain insights into motor mounting, pulley selection, VFD programming, and the intricacies of AC motor control. Witness practical demonstrations of rigid tapping in both wax and metal, and discover various types of taps for different applications. Perfect for CNC enthusiasts and machinists looking to enhance their milling capabilities.