3D printed Stepper Motor

Here are the models for 3 different stepper motors. All 3 are functional. A few screws and some copper wire are needed. The motors are controlled with an Arduino.
Look at my video on YouTube: https://www.youtube.com/watch?v=CMJvTygEdhQ&list=PL9Jzxu1vDldMNZdv_c5Pis4F-nQ77MFtc