Bottle Hanger

thingiverse

This is a hanger to hold a 2 litre soda bottle for use as a bird feeder reservoir. You can change parameters to use different sized bottles, you may have to fiddle with boss (ear) placements if you change bottle diameter. I added holes on the face of the ring to allow self tapping screws to pierce the bottle, thus preventing it from detaching and free falling to the ground.