This is basic U-Joint for demonstration purposes. I drew this up to show how a basic U-joint on a driveshaft works.

It's fairly easy and quick print with no supports required.

Print 2 shafts, 1 joint and 1 base.

Insert the joint into the yokes while rotated at 90°, they will lock into place when the shafts are almost 180° to each other.

The model shown was printed in ABS with a layer height of .16mm.

Please like and upload a make!