Neat project, just going through it, had some feedback

Looks like the bom is missing the grub screws.

Also, i did notice that the BOM heatserts were not a great fit for the rods, the diameter hole for the rods should be a bit tighter, though maybe the supplied link for parts changed what they send. can take measurements if you'd like what I'm seeing here.

Also the M4 washer is missing from the optional parts BOM.

Driver board is missing from the cad, and maybe some discussion of mounting options for the boards to the unit would be helpful. 3m foam tape or something along those lines. Maybe I'm just not seeing where moutning is discussed.