This being my first post, Ill probably sound absurd. I am building my third CNC machine. I am trying to use a LEAD machine as a base. I am adding a tool changer (120mm addition to Z axis) I also will be adding A axis rotation (150mm addition to Z axis) now using a 500mm Z axis V-slot does not sound stiff enough, further all the torque will be at the top. I was wondering if anyone has even tried a 500mm tall LEAD machine.