Screw on funnel for 2l bottle

A screw on funnel to fit standard 2l soft drink bottles. I designed it to refill a 3d-printed bird-feeder which uses 2l bottles to hold the seed. remixed from: https://www.printables.com/model/1200637-bird-feeder-reduction which is part of the bird feeder I used: https://www.printables.com/model/1148339-bird-feeder-bottle-wide-cap-48mm It will probably have other uses - I use the 2l bottles a lot, for mixing fluids for my car, and things like citric acid rust remover. probably best to print from ABS/PETG since (for me at least) it's likely to get battered around a lot. It should print without supports