X3 mill with rails, ATC, new motor

[Jonathan]

BTW if you are going to use linear rails/bearings on all X and Y and using the "fill in" the dovetail method you used on the Z, are you going to lose ~60mm in the Z due to the height of those units?

Something like that, yes. I could get the Z-height back again by adding a spacer block under the column, but clearly how that affects the strength needs to be considered. Also, I'm tepmpted to replace the existing table with something bigger...