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

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

⚠️ 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.