Funnel to fill NeilMed Sinus Rinse bottle

This funnel threads onto the NeilMed Sinus Rinse bottle (https://shopca.neilmed.com/products/sinus-rinse-kit-with-50-packets) and aids in filling with distilled water. (Often, distilled water is purchased in large jugs that are difficult to pour into the small bottle opening.)

Key features:

• Funnel directs water all the way into the neck of bottle for no leaks
• Venting to allow air into the bottle for quick filling

Dimensions:

• Funnel is 30 mm high and 60 mm wide
• Threading is 23.6 mm outer diameter and 21.6 mm inner diameter
• Filling hole is 15 mm outer diameter (goes into the bottle).

I print this upside down on the Prusa satin sheet with no brim.

I've created this with OpenSCAD and it's fully parameterized. If you would like a different size, please message me and I should be able to create it quickly.

I've used the following libraries:

• threads.scad: https://dkprojects.net/openscad-threads/
• knurledFinishLib_v2.scad: http://www.thingiverse.com/thing:31122