Hi Irving

Let's not forget that trying to screw this kind of accuracy out of a Warco mill/drill puts us deep in to the realm of silk purse and sow's ear. Silly has already been left way behind

Motorizing the Z axis handle would be much more in keeping with the machine, but you would never push the boundaries that way.

Would you like to have the z-axis I'm ripping out? It's much the same as the one that's going in but a lot less beefy and made without the benefit of cnc.

One more set of pics and the operation should become clear.

Robin