The file 'Birdfeeder Platform / Futter Plattform Vögel 3D Printer Model' is (f3d,stl) file type, size is 187.3KB.
I designed another platform for my bird feeder, It has a 21mm hole diameter. If you need a different hole diameter easy design an adapter or re-design in FUSION360 as I attached a FUSION file.
The platforms fits to this: https://www.thingiverse.com/thing:4092931
Futterring_v3.f3d | 153.9KB | |
Futterring_v3.stl | 166.7KB |