Modular Rail Attachment System Demo

Just a reference demo of a printed quick-release rail attachment system. Designed to be printable in most orientations, without any special tuning.

It is meant for building modular storage and electronics, mounting devices to walls, and any other time where you'd like to use a DIN rail, but need something smaller for something non-critical.

A piece of filament bent into a U shape is used as a pin to connect the two pieces. Inserting the pin is rather easy, and once attached, they are nearly impossible to separate be any means besides pulling the pin.



Mechanical drawings are included, as is the full FreeCad Assembly3 document.


The system is based on 32mm tiles, with 2 pin holes 16mm apart. Tiles can be repeated to form a rail of any length. A 4.6mm hole in the middle of every male tile allows use as a wall mounted rail.

The gap between parts is meant to be covered by 1/4x1/8 foam tape, providing both extra pressure to hold the pin in place, and vibration isola