Trying to source steppers - are there any advantages / disadvantages between the the 0.9 and 1.8 deg version?
Other than the usual constraints I’m guessing the holding torque is the important factor, I’ve sourced these ‘Nema 17 Stepper Motor 84 oz.in (0.59 Nm) 47mm Body 1.8 degree with 1M 4-pin Cable’
Thanks
Matt
.9degree steppers increase the theoretical resolution of your machine at the expense of limiting your theoretical top speed (since your control board needs to command 2x as many steps for the same speed and has some pracitcal limit to its step rate. No idea whether torque is better/worse vs 1.8 motors so I won’t comment on that.
with a 20T drive gear a full 1.8degree step is .2mm and a 1/16th microstep is .0125mm so I wouldn’t worry about the loss of resolution.
As for torque, 84in-oz should be plenty. My understanding is you will reach the rigidity limits of the machine before you are limited by motor torque.