[IgorPartola]

You could always run smart steppers like Mechaduinos or the similar option from Big Tree Tech. Your firmware might not even need to be modified, though there is work being done on Klipper to run firmware directly on the steppers so each one is treated as an six board responsible for a specific function.

Nothing against your advice just providing another option that uses steppers that don’t skip an occasional step (that is to say that if you ask for more torque from a stepper than it can handle, smart or not, it will not produce more torque out of thin air).

[jacquesm]

Yes, that's an option. Technically that is a servo system from a classification point of view. Anything that contains a motor, a controller and a feedback mechanism is a servo system.

[IgorPartola]

I actually see that as an option (ODrive) in the featured article :). I am really curious to play with them myself as I’m about to start building the MPCNC.