Hybrid Mill Design

[routercnc]

Chaz,

. . . My suggestion on the spindle arrangement is to make the box section adjustable so that you use two of the rails as data to bring the other two in to take up the tolerances.

Agree with that. My plan was for the green sections on the Y axis to have the vertical end plates arranged so that I can fix one pair of carraiges and then 'slightly pre-load' the other plate up to the opposite side so everything is aligned. This assumes the machining on the Z axis plates is good where the rails sit.

[Chaz]

The reason for the grub screws to hold the spindle was that I did not want to distort the 'box' by slotting it and then clamping the spindle but wasnt sure if the grub screw method would work.

The same for the 4 way / 4 carriage system. Im not sure how the Octagon system works on the benchmark mill .... need more info / pics and google hasnt helped.

This is why we get feedback :-)