Simple guide tube to route cables around corners. Even if they do not really want to. Does not work for cables with connectors already on, as you need to push the cables throught the guide tube. The tube is not an actual circle for better printing.

I originally created this, because I was worried that the cables leading to my SKR1.3 Ender 3 were bending near the connector where there is not insulation. This relieves the strain.

The design is customizable (the download is just an example), so use OpenSCAD to get the size you need (customizer shows me a wrong preview). The major parameters are:

• bend radius: the bend radius at the center of the tube
• shell size: shell as if the tube was circular -- the rectangularization is added to that
• rounded corners
• overhang angle: little flattening at the top for better prints