Design of small router (700x900) for aluminium

[Edward]

Well, after a bit of agonising over whether to attach the X axis rails to the sides, under the bed or on top, I have decided to go for the gantry resting on top kind of design, which is what seems to be the consensus for best sturdiness, albeit this router will be built in aluminium, not steel, and its main use will be to cut aluminium.

Suggestions welcome.

Specs:

Bed built with 25mm tooling plate

X rails plus linear blocks, 25mm Hiwin

Y and Z rails and blocks, 20mm Hiwin.

Ballscrews 1605 TBI grade C5 with double ballnut on X and Y

Motors Nema 23 - 3.1Nm all round. 68V toroidal PSU. Drivers, Leadshine EM806. Controller: Kflop/KMotionCNC

Y rail mounted on 50x50 heavy duty extrusion.

Gantry to bed distance 120mm, spindle to bed 135mm. Z rail mounted on the 25mm moving plate.

Gantry construction: Two piece "L" shape with heavy duty extrusion, 160mm tall in total plus 10mm tooling plate bolted in front.

Gantry sides, 25mm thick plus additional square brackets in 20mm.

Underside bed, heavy duty extrusion frame with braces.

Spindle 2.2Kw.Chinese watercooled.