We use a 64oz grape juice bottle for a chicken feeder, but it uses the same thread as a Gatorade bottle. This makes filling it MUCH easier and cleaner.
I printed solid for strength, but print profiles are included for various uses. Since I am not using for liquid I did a .28 layer height, for liquids you would want to use a smaller layer height, and likely a different filament than PLA so it would be washable. I have found ABS cleans up nicely in the dishwasher.
Use 3d printed plastics at your own risk for food purposes
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