If you are in need of product design services for your business, or just need a custom personal model created, feel free to reach out. I offer CAD services for 3D printing product design.
unreal3ddesign.com
This is a gardening adapter for a 1 gallon milk jug. I have seen other designs that try to serve the same purpose, but none that I liked, and I think this one is a major improvement over the ones I have seen.
Some parts are slightly tricky to print, but it does work, I have done several working prototypes already. See the video for print setting tips and demonstration.
Technical drawings included for reference. See PDF file.
3D printing settingsSee video for print setting tips. The materials I used were PETG and TPU, and they work great, but I'm sure it can be done with PLA. I just wouldn't recommend that if it is going to be stored in a hot garden shed or something, it may melt.