Bird feeder for PET bottle - both 21 & 38mm thread

Cool bird feeder, using PET bottle with wider, 38mm thread, for example from ICE TEA, NESTEA, CAPPY, DIZZY etc. (should be PCO 1810 or PCO 1881 thread type, according to AI).  From original I took only a thread, rest is my own design, inspired here: https://www.thingiverse.com/thing:251085 (from this thing comes also the hook, also redesigned/remixed).

The bowl is extra super fine tuned to be able to drain water. “Column” is super fine tuned too, it's openings are wide and high, so sunflower seeds should not get stucked.

Printed with PETG, hook with 100% infill, bowl with 25% infill, layer 0.25mm. Hook needs supports.

EDIT 13.10.2024: I uploaded version 2 of the print profile As the windy weather becomes more frequent and the seeds fall out of the bowl during the wind, I modified the feeder to have a higher bowl - about 26mm, thanks to which the seeds do not fall over the edge, even if the bottle is swaying in the wind. I also added a version for a standard bottle with a 21mm thread and a hook to the print profile.

EDIT 23.10.2024: Added bottles link for both versions. Cut one bottle to serve as a funnel and use bottles link to connect funnel bottle and feeder bottle for easy refilling. 38mm version throws some error in Bambu studio, but prints out well.

EDIT 07.12.2024: Check out my latest design here: https://makerworld.com/en/models/858264 - Bird feeder made from a granulated tea bottle.

EDIT 13.02.2025: Check out my latest design here: https://makerworld.com/en/models/1105514 - Window bird feeder.