I have these small feeders in my windows to leave seeds for birds in winter. They are relatively small (12x8x6 cm) but have a decent capacity for seeds. To hold them I use some double side tape or some general purpose glue.
Printing instructions:
Most pieces are thin enough to have no infill, for the rest 20% or less will do. I have added to versions for the roof, in the 3 parts version the pieces will need to be glued together but they all print with no supports, this is the one I use because my printer is not great at supports and overhangs. In this case the main roof body is hollowed.
If you use the single piece infill 10 or 20%.
The reservoir and the base need no glue, they will snap together.
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The author marked this model as their own original creation.