Universal Modular Pipe Connector

Build anything — shelving units, greenhouse frames, display racks, tent structures, or robot chassis — with one parametric connector that adapts to your exact pipe size.

This fully parametric OpenSCAD model generates 3-way, 4-way, 5-way, and 6-way pipe connectors with a single click. Just enter your pipe's outer diameter and the connector does the rest.

✨ Key Features

5 Connector Modes — 3-Way Corner, 4-Way Flat Cross, 4-Way Corner, 5-Way Hub, and 6-Way Universal Hub.
Any Pipe Size — Works with PVC pipes, aluminum tubes, carbon fiber rods, wooden dowels, or copper tubing. Just enter the outer diameter.
Structural Gussets — Optional reinforcement ribs between adjacent arms for maximum joint rigidity under load.
Precision Tolerance Control — Dial in a snug press-fit (0.1mm) or a loose sliding fit (0.4mm) depending on your application.
Flat Base for Printing — Horizontal arms sit flat on the build plate at Z=0. No wasted supports on the underside.
Through-Bore Design — Hollow all the way through the center hub for clean pipe insertion.

🔧 Customization Guide

Parameter	Description	Default	Range
Mode	Connector type	3-Way Corner	3-Way Corner, 4-Way Flat, 4-Way Corner, 5-Way Hub, 6-Way Hub
Pipe_OD	Outer diameter of your pipe/tube (mm)	20.0	5 – 50
Wall_Thickness	Connector wall thickness (mm)	2.4	0.8 – 6.0
Socket_Depth	How deep the pipe inserts (mm)	25.0	10 – 60
Fit_Tolerance	Clearance for fit (mm)	0.2	0.1 – 0.5
Enable_Gussets	Toggle structural ribs	true	true / false
Gusset_Thickness	Rib thickness (mm)	2.4	1.2 – 4.8
Gusset_Length	Rib extension along arm (mm)	15.0	5 – 30

Tip: Measure your pipe's outer diameter with digital calipers. Start with Fit_Tolerance = 0.2 for a snug friction fit. If the pipe won't slide in, increase to 0.3 or 0.4.

🖨️ Printing Recommendations

Setting	Recommendation
Material	PLA, PLA+, or PETG for structural applications
Layer Height	0.2mm (standard) or 0.16mm (for smoother sockets)
Infill	30–50% Gyroid or Grid for structural strength
Walls/Perimeters	4 minimum (critical for socket strength)
Supports	Required for 3-Way Corner and any mode with horizontal arms
Brim	Recommended (5mm) for stability during print
Nozzle	0.4mm standard
Orientation	Print as-is — the model is pre-oriented with the flat base on the bed

⚠️ Structural Notes

For load-bearing applications (shelving, furniture), use PETG or PLA+ with 50% infill and 6 perimeters.
For decorative frames (plant trellises, display racks), PLA at 20% infill is perfectly fine.
Always enable gussets for any structural use.

Descrição

✨ Key Features

🔧 Customization Guide

🖨️ Printing Recommendations

⚠️ Structural Notes