Already converted to X&Y CNC using existing Acme screws and Steppers on Mach4 with Ethernet smoothstepper. Works OK but..... Hoping the ballscrews will give more speed and accuracy.

For the Z axis I obtained a spare head casting and machined the front flat so I can get the ballscrew closer to the quill and extended the slot downwards so I can get 2 fixings on to the quill. Need the X&Y axis up and running to machine the necessary Z axis slipper, Not sure how well this will cope with drilling large holes may have to do that manually.

How did you reinstate the oil feeds to the yoke? For the X axis I drilled into the old bush keyway which should distribute the length of the yoke but for Y axis just put a drip onto the ballscrew at the back side. Not sure how much lube is required.

Cheers