Router losing steps. Solution needed. Will this help?

[JAZZCNC]

70V is only just enough if they are smaller 4nm 34 motors with low inductance but if they are larger motors then it's not really.

It sounds like this could be few things working together.? Possibly some binding and overtuned motors but without knowing more regards screw pitch and size etc then difficult to say. But with 10mtr/min rapids and guesiing 10mm pitch screws your all ready tuned over the corner speed of the motors and running the motors with low voltage so torque less higher up the speed curve.

I'd tip these steps are lost on directional changes thru inertia pushing with low torque and guess your using 25mm screws with a 10mm pitch.? (Things only get worse if your using R & P due to low efficency)

Give full SP on machine ie: size/pitch/ratio etc of linear motion. Motor tuning setup Velocity/accel etc. Drive setup amps and Micro step setting.

Oh and forgot to say in last post.! . . . . YES Dump NC Studio and go with Mach it's much better IMO. I'd also recommend you think about an external motion control card to get the best from your machine and setup. They really do blow the parallel port away giving much better pulses which translates into smoother motor performance and higher tuning capabiltys. They also make Mach much more reliable as they take all the strain of generating pulses leaving mach to get on with other tasks. Also PC doesn't need to be anything special and even allow laptops to be used.