It's been a rough night. I'm 98% done with my build, and as I was moving the gantry around I managed to run it into the hard stops. Contrary to what I've heard countless people say, the stepper motors (620 oz-in) did not stop right away. They kept turning and making a lot of racket...this went on for about 5 seconds before I was able to shut it down. It's not really a hard stop, they are made of rubber so there was some chugging back and forth against them. It doesn't look like the rack/pinion are stripped, so I'm not sure what was making all the noise. My Y and A motors are slaved, and all the noise seemed to be coming from the Y motor.

I pulled power from the motors and the gantry seems to move alright without too much effort. Nothing seemed horribly damaged. Re-applied power to the motors and tried to move the Y-axis 1/2 inch and it moved, but made a similar awful noise.

Did I destroy my stepper motor(s)?