Self-Starting Siphon for Cups (2026 Edition, parametric)
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A siphon that starts dry and primes itself, lifting the liquid above its own level and over the rim of the cup.
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Informacje o modelu
- Źródło
- Printables
- Kategoria
- Kitchen
- Licencja
- Creative Commons — Attribution — Share Alike
Gets over the rim of a cup by itself. This siphon starts completely empty and primes itself: the liquid climbs above its own level, goes over the rim and drains out the other side. You don’t suck on it and you don’t pump it. It’s just physics, plus a bit of 3D printing.
What’s new
Clips over the rim: the main bend is a tight U sized to the cup wall, so the siphon holds itself in place.
Teardrop bore with a flat foot, so it prints lying flat without any supports.
The zigzag stages sit inside the cup, and the inlet reaches down close to the bottom.
Fully parametric: cup diameter, height, wall thickness and inner depth, bore, wall, number of zigzag stages, bend radius, inlet gap, outlet lean and rim clearance.
Made with hackerscad
The model is written in hackerscad, a code-based parametric CAD. The .hcad source is included (zipped). Change the cup dimensions, re-export and print one that fits your own mug.
Print settings
Print it lying flat, no supports.
0.2 mm layers. Use enough perimeters that the 1 mm wall comes out solid and watertight.
PETG is a good choice if it will touch water or warm drinks.