Have you ever encountered “air lock” when pouring liquids? The bottle opening gets blocked, the flow slows down, and you may even see bubbles or spills? I’ve designed this 3D-printed funnel with six external vent channels—specifically to solve this common problem!

✅ Key design features:
6 longitudinal vent channels: evenly distributed along the funnel’s outer wall; when the funnel is inserted into the bottle opening, air can escape smoothly through these channels, preventing positive pressure that would otherwise impede liquid flow.
Seamless fit to bottle openings: a tapered design paired with standard bottle-neck dimensions, compatible with most glass and plastic bottles (e.g., reagent bottles, beverage bottles), ensuring a tight seal and no drips.
3D-printed materials: crafted from PLA or ABS, lightweight yet durable, resistant to mild acids and bases, making it ideal for laboratories, kitchens, DIY projects, and more.
Zero‑dead‑space design: a smooth, streamlined interior that’s easy to clean and minimizes residue.