Thanks for advice, my gantry concrete 3d printer design as shown below:-
20200518_155031.jpg

Mainboard - Duet2 wifi v1.04 32bit with 4.3" paneldue touch screen Controller driver - External driver servo motor
20200518_214301.jpg 2 servo motor(x axis) running with gear rack 2 servo motor(z axis) running with DFU ball screw(3205) 1 servo motor(Y axis) running with gear rack 1 servo motor for screw cement extruder Printing flow rate: 51.3ml/s Printing speed: 200mm/s
Appreciate for helping, thanks.