Flaschen-Trichter
thingiverse
This funnel can be screwed directly onto the bottle. It's ideal for filling bird food dispensers, check out the "bird-food-dispenser" at https://www.thingiverse.com/thing:496741. There are three sizes available: 25mm for Cola/Fanta bottles and others, 28mm for Volvic bottles, and 32mm for larger Volvic bottles.
Download Model from thingiverse
With this file you will be able to print Flaschen-Trichter with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Flaschen-Trichter.