http://nide-group.com/En/pro/mid/39.html armature making machine
https://www.youtube.com/watch?v=sTBbjvli39U rewinding machine
https://www.youtube.com/watch?v=XeqC7nnae_Y DIY brushless outrunner BLDC
https://www.youtube.com/watch?v=AimKJTIOqkU rewinding gimbal dc motor(30rpm)