Opinions on this router design

[routercnc]

Hi Nathan,

Good start in many areas:

Ballscrew choice - good
base 50x50x3 - OK for wood, possibly go a bit bigger
20mm ecocast plate - good
gantry 90x45 'L' - fine for wood and occasional aluminium
rails 15mm - bit on the small side for mounting nicely to profile on Y (I used 20mm rail on Y to span the slots better). Ok for X to steel box section, and Z onto plate.
M542 - OK, mid-level drives and you have them anyway so may as well start off there.
Spindle - Kress, ok but noisy. 2.2kW WC spindle upgrade WELL WORTH IT.

Layout:
I would raise the x-axis rails to avoid having 'gantry sides' and allow a more direct mounting of the gantry to the x-axis bearings
The x-axis ballnut mounting plate (yellow) looks too weak - this will limit the x-axis stiffness as seen by the cutter
The y-axis ballnut mounting 'plate' looks too weak and offset - I would move the Z stepper motor (e.g. turn it on it's head and mount on posts to free up space) and get a better connection to the y-axis
Add another set of holes in the Z plate for the motor mount. This will allow you to move it up on the plate for different jobs.