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Make refilling easier with a funnel that gives displaced air a way out. Customize the mouth, spout, wall thickness and vent grooves, with an optional hanging loop and vase-mode profile. Prints mouth-down without supports. For food contact, food-safe PLA is advised; use a food-safe barrier, as filament alone does not make prints food-safe.
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.
