Looking so much better.

I agree with Jonathan, the X axis screw mounts look a tad flimsy. You need it rigid at the end which bears the thrust bearings.

Presume you are bolting it down in all 4 corners to something solid.

If you rearranged it a bit you could cover the X axis screws with aluminium angle and shield them from the worst of the swarf coming off the tool.

Anything you weld will distort. Okay to weld so long as you can machine it back to square after it has cooled down.

Very refreshing to see someone actually taking advice rather than rushing in to it and having to make a Mk 2 very soon after the Mk 1. Keep drawing, you won't regret it