Hi,

Just looked at machine drawing and it's looking nearly there but 2 things both been picked up on and one Neil pointed out but think you've missed is the Z lower axis bearings conflicting with bolting together. This is a common Err that I and many others have done in the past so don't beat your self up. lol

The Long ballscrew mounting needs some attention.! These are areas where you need some adjustabilty for setting up and alignment so you will be best to mount the End bearings on plates that can be easily adjusted and like wise the mounting point on the Gantry needs to be more accessible. Try not to make the screw go thru the fixed mount but rather have ballnut mount that bolts to the gantry drop plate.
This will make screw alignment much easier and allow finding best performance just that bit simpler.!

Looking good and will soon be time to put the pen down and start cutting.!!