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A parametric funnel with a ventilated spout. A wide conical mouth tapers to a straight spout carved with a longitudinal vent groove, so when the spout drops into a bottle the groove leaves an air channel and liquid pours smoothly instead of glugging. Set the mouth width, funnel height, spout (bottleneck) diameter and length, and wall thickness, and choose how many vent grooves to run and how deep. Add an optional hanging loop at the rim, or switch on vase mode to bundle a single-wall spiralize print profile for the fastest, thinnest print. Prints mouth-down with no supports; STL and a ready-to-print 3MF are included.
Outside diameter of the wide funnel opening (the mouth), which sits on the print bed.
Height of the conical body, from the mouth up to where the spout begins. The overall model is this plus the spout length.
Outside diameter of the spout — the bottleneck that drops into whatever you are filling. The inner bore is this minus twice the wall thickness.
Length of the straight spout tube below the cone.
Thickness of the funnel wall. 1.2 mm prints as a sturdy multi-perimeter wall; in vase mode the slicer replaces it with a single spiralized wall.
How deep each vent groove is pressed into the spout. This is the air gap that keeps the spout from sealing in a bottle neck. Set to 0 for a plain, unvented spout.
Number of vent grooves spaced evenly around the spout. One deep groove matches the classic vented-funnel look; several shallower grooves keep the spout more centred.
Add a small hanging loop at the mouth rim so the funnel can hang on a hook. Prints best in normal (non-vase) mode.
Bundle a single-wall spiralize ('vase mode') print profile in the 3MF: one continuous wall, no top layers, no infill — the fastest, thinnest way to print the funnel. Leave off for a standard multi-wall print.
