2 liter bottle funnel top

thingiverse

I customized Theidd's funnel design for a bottle-based bird feeder, enlarging the hole and removing the hanging loop. It works well for birdseed and other powders, without requiring much post-print cleanup. This modification is derived from RomanoGaspari's GrabCAD design, which was originally created by Theidd. For any commercial use, please contact the original designer.