Hi all Im very new to all of this and require help and guidance with my project. The aim of my project is to rotate an inner tube (35mm long 20mm diameter) within another tube (21mm diameter - 80mm length) one full 360' turn and then stop in 0.05 seconds, ready for the next command. If the user can press the button 15 times a second it will turn 15 times (0.05 per turn). Ive been reseaching stepper motors but not sure if they are the right "tool" to use. Can you please suggest a method how I could preform this motion. I have created a model of what I need and have used a cordless drill as the "engine" to turn the parts and the method works. Now I just need to scale the "engine" into the body of the object. thanks in advance. appologise if this is in the wrong forum.