Hello!

Im no expert so take my advice with a huge pinch of salt :)

The recommendations for the gantry side plates is usually 20mm thick instead of 15 for aluminium routing.

I do think that you need the extra bearings on Z axis.

The motor strength is fine if the motors have low inductance?

Also I don't know about the strenght about mounting the gantry atop of the ballnut like that.. The side plates should be connected to the plate that has the hiwin bearings..

Im sure you will get more feedback!

Otherwise very nice cadwork :)