Hi Tom,

It is only idea, but stepper motor has more torqe at low speed so adding higher acceleration
at low speed will improve stepper motor performance for making 3D reliefs.
I dont know is it hard to implement, becouse I am not very good C programmer.
Please someday consider this option if it can be added in some new release of Kmotion.

Example of acceleration vs speed for stepper motors:

Regards 
Albert