Universal Pipe Connector (Angle, T, Cross, 3D Corner)

This is a simple universal connector for tubes and profiles, designed for 3D printing.

It supports common connection types like:

90° angle
T-joint
cross connector
3D corner

The model works for round tubes and rectangular profiles.

Important

This file is just one fixed version.

If you need a different size, better fit or another configuration, you can create your own version here:
https://www.machdeinteil.de/produkt/UniversalVerbinder

Why I made this

In many projects, standard connectors don’t fit properly.
Tube diameter, tolerances or geometry often don’t match.

Instead of modifying STLs manually, I built a small configurator where you can generate a fitting connector.

What you can adjust online
connector type (angle, T, cross, 3D corner, etc.)
round or rectangular profiles
diameter / width / height
insertion depth
tolerance (for better fit)
optional screw holes
Use cases
simple frames
DIY projects
workshop builds
prototypes
3D printing
PLA works fine for light use
PETG or ABS for stronger parts
adjust tolerance depending on your printer
Notes

This is a basic version to test the concept.
If something doesn’t fit perfectly, use the configurator to generate a better version.