Set the mouth, the spout and the cone height, and get a funnel that actually fits your jar, jerrycan or filament-dry box. It generates as watertight CAD with a smooth interior, plus an optional loop to hang it up to drain.
Each parameter below rebuilds real geometry on every change — this is parametric CAD, not a scaled mesh.
| Parameter | Default | Range | What it does |
|---|---|---|---|
| Mouth diameter | 90 mm | 30 – 200 | Top opening diameter. |
| Spout diameter | 12 mm | 3 – 60 | Inner diameter of the outlet tube. |
| Spout length | 40 mm | 10 – 120 | Length of the straight outlet tube. |
| Cone height | 60 mm | 20 – 150 | Height of the conical section. |
| Wall thickness | 1.6 mm | 1.2 – 3 | 1.6 mm = four perimeters. |
| Hanging loop | True | on / off | Rim tab with a hole to hang the funnel. |
FDM prints have layer grooves that can trap residue, so treat printed funnels as workshop tools by default. For kitchen use, print in PETG, wash promptly, and treat it as a short-lived utensil — or use it as a mold reference and buy food-grade for critical use.
Glugging means air can't escape the container. Make the spout a little narrower than the container neck so air passes beside it, or ask the AI agent to add external ribs on the spout — the classic anti-glug feature.
Three to four perimeters (the default 1.6 mm wall), 0.2 mm layers, and slight over-extrusion or 'iron' the cone if your slicer supports it. PETG at higher temperatures self-seals better than PLA.