I'm designing and 3d printing a robotic arm to hold a camera and make graceful camera movements.
In this video I 3d print the shoulder and elbow joints and make initial trials with a camera!

These are the supplies i used:
NEMA 17 stepper: https://amzn.to/3gtK3Qd
Arduino Mega: https://amzn.to/3nx3Oui
5mm steel rod: https://amzn.to/3HMBGeV
Thin wall bearings: https://amzn.to/3gtYLqG
and: https://amzn.to/3H7JPZY
1.75mm PLA+ filament: https://amzn.to/3HvzVT5
The PTFE grease came from eBay search for "50g silicone PTFE grease"