cnc for marble

[Clive S]

1- the max speed i can use is 400 mm/sec after that i loose steps dramatically and also this consumes a lot of time as the max step down is from 2-4 mm, i use the steppers directly i think i should be using speed reduction method ,i use nema 34 steppers 11n.m

Yasser first welcome to the forum. Are you sure about the 400mm/sec as that is 24mtr/min and is very fast. you need to give the specs of the controller and drives also the voltage of the output of the power supply.