Smooth Parametric Funnel

I designed this parametric funnel so I can create any size or shape of funnel I need.

Works great with TPU for unbreakable funnel exact to any dimensions and angle, with or without a loop for hanging it and with a smooth transition radius from the funnel to the neck and optional output bevel, and vase mode. For smaller funnels Vase Mode is preferred. Vase mode automatically disables the output bevel and the hanging loop and ignores the wall thickness setting. If using Vase Mode with TPU, you may want to over extrude a bit or increase the wall widths, depending on the slicer you use.

This model allows creating a funnel of exact outside diameters for a very stable fit for any test tube, beaker, bottle, flask, jar, etc.  Make sure you know what chemicals are appropriate for the material used to print the funnel!

Adjust the parameters in OpenSCAD and make any size funnel you need.

No supports needed.

Print at 100% infill unless you have an unusually thick funnel. I usually set thickness at either 1 mm or 2 mm.