Hollow Barrel Hinge

This is a hollow barrel hinge. There are two supplied versions. First, uses a dimple method for the hinge. Then second provide an access hole where a axel shaft may be passed.

When printing the top piece, I recommend printing it on it's side with supports. This will minimize risk of the arms snapping off between stacked printing layers. Instead, the printed layer will be continuous from the base out to the tip of the arm.

A tip was glued onto each end of the hinge, shown in one of the photos.

See also modified project here: https://www.thingiverse.com/thing:2921466