I have a bipolar stepper motor. Sometimes I shut off the power to my power supply in order to do some manual machining. The only problem is there still seems to be, what I believe, is electricity in the stepper motor and this causes cogging and resistance if I try to turn the stepper by hand at any fast or even descent speed. I guess this is what is meant by powering down the stepper. Anyway, does forcing the motor to turn with cogging and resistance hurt a stepper motor in any way? How can I power down the motor before turning manualy?