1200mmX900mmX170mm 4axis cnc

[Nickhofen]

I am about to pull the trigger and buy the ballscrews, rails and spindle.

Carriage 2 X BLH 20-L900mm linear guideway +4pcs BLH20N Narrow Linear
Carriage 2 X BLH 20-L1200mm linear guideway +4pcs BLH20N Narrow Linear
Carriage 2 X BLH 20-L400mm linear guideway +4pcs BLH20N Narrow Linear

ballscrews Anti Backlash Ballscrew RM1610 -L900mm with SFU1610 Ballnut +BK12 BF12 Support Unit + 1610
Nut Bracket + 6.35*10mm coupler1 X Anti Backlash
Ballscrews 2x SFE 2020 Rolled Ball screw L 1200mm with SFE2020 ballnut + BK15 BF15 Ballscrew Support block + 8mm to 12mm coupler
Ballscrew RM1610 -L400mm with SFU1610 Ballnut + BK12 BF12 Support Unit + 1610 Nut Bracket + 6.35*10mm
coupler

I will use ratio at all screws to lower the screw speed for cutting aluminium.

For spindle I am going for this one:

https://www.aliexpress.com/store/pro...5bdadf47BsiI9F

for stepper motors I am going for Nema23 4NM ,this will be the next thing to order.

If anyone is willing to double check for mistakes,I will highly appreciate that.
Any opinions are welcome!