Straight hose connector (I-piece)
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A straight inline coupler that joins two equal hoses with push-in barbed spigots. Fully parametric OpenSCAD file – adjus
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- Printables
- Kategoria
- Bathroom
- Licencja
- Creative Commons — Attribution — Noncommercial — Share Alike
A simple, sturdy straight connector for joining two hoses of the same size. The two ends are barbed spigots that push into the hose; a central collar acts as a hard stop so both hoses seat to the same depth.
Typical uses:
Condensate drain lines from air-conditioners, heat pumps, dehumidifiers and fridge defrost trays
Aquarium and pond tubing
Washing-machine / appliance drain hoses
General low-pressure water and air lines
Out of the box it is sized for 16 mm hose inner diameter, with 30 mm insertion depth and 4 barbs per side. It is meant for gravity drainage and low pressure, not for pressurised plumbing.
This is a parametric OpenSCAD model – make it fit your hose
The main file is i-stueck.scad, a fully parametric OpenSCAD script. You do not need to know OpenSCAD: open it in the free OpenSCAD application (or use the Customizer here on Printables) and change the values at the top, then export your own STL.
Adjustable parameters:
Parameter | Meaning |
|---|---|
| inner diameter of your hose (the main dimension to change) |
| wall thickness of the spigots |
| how deep the hose slides on |
| number of barbs per side |
| how far the barbs stand out (grip vs. ease of fitting) |
| width of the centre stop collar |
A ready-to-print i-stueck.stl is included for the default 16 mm size, exported in print orientation.
Print settings
Setting | Recommendation |
|---|---|
Material | PETG (moisture-resistant, slightly flexible). PP or ASA also good. PLA only for dry indoor use. |
Layer height | 0.20 mm |
Perimeters / walls | 3–4 (for a watertight part) |
Top / bottom layers | 4–5 |
Infill | 20–30 % |
Supports | None |
Orientation | As supplied: lying flat on the bed (largest surface down). |
Brim | Optional, helps the small footprint stick. |
For a permanent joint add a small hose clamp or zip tie over each barbed end, or a little silicone.