If I buy an 12nm closed loop stepper, like a leadshine closed loop clone, can I use 1/2 microstepping and not go down to 71% torque, or 38% for 1/4 step?
If I buy a closed loop stepper, can I have less of a 'reserve torque' and thus probably go down to a smaller stepper motor? Perhaps a 8Nm where 12nm are commonly used (e.g. an 8Nm motor for the z-axis on an rf-45 clone)?
My plan / reasoning / ideas:
I plan on using leadscrews for my RF-45 clone of 5mm, which translates to 0.025mm movements for 1 a step on a 1.8 degree stepper. Seems too large, I want to hold 0.02mm or less, so I need to microstep right? I am thinking 1/2 microstepping would be ok as it would bring me to 0.0125mm per 'step'.
I do this by setting the DIP switches on the driver, which sets the microstepping to some fixed value I guess.
Is my logic right? Maybe a 10mm lead with even more microstepping would be good?
Incidentally anyone know if the leadshine clones are good, or should I pay an extra $100 per axis for genuine leadshine.
Thank you!