Gentle Cable Stop/ Guide for 2.5 mm OD Wire

Description:

This is a very specific solution for a very specific problem. Maybe someone else might need it.

This is a cable stop/ cable guide for cables with 2.5 mm outer diameter. It is meant to grab the cable tight enough that it does not slip, but gentle enough that the cable insulation is not ruined and the wire does not get pinched. Naturally, it will certainly not hold much smaller diameter cables, bigger ones will not fit in. As I said, a very specific solution. 

In the picutres you can see the intended usecase: I drilled 2.5 mm holes into my window frame, to guide a single long cable through it. This cable is a long wire antenna for amateur radio purposes. The cable is tensioned gently against the window frame with the cable stop. Because it is used for rf purposes, I also did not want to introduce unnecessary loops into the path. The S-curve surely must be better than winding the cable around something a few turns, right?

Other matierals needed:

You will need screws, if you want the cable guide to be ridgid and reliable. The object is designed for three DIN 9091 screws in M3 x 10 size. With the print quality i achieved, they grab real tight. In case you can't get those, any screw with dimensions M3 x 10 and a coarse thread should do it, as long as the diameter of the head does not exceed 5.7 mm.

Printing:

The 3mf file is pre-sliced with PrusaSlicer 2.7.4 for a Prusa Mini+ with the 6.0.0 firmware for a 0.25 mm nozzle, Pursament PLA filament and 0.15 mm layer height. I'll add the gcode for my setup, too. Worked flawless with my Mini+ and i got no problems with the little bit support material.  

Assembling:

Pull the cable a little bit further than you want it to be in the end. Push the cable into the S-groove, after the first two turns are in, it should hold itself already. Take the lid and push it into place.

The screwholes are tilted to the front end of the cable guide, so that it is easier to screw together in tight corners. Don't overtighten the screws! A small gap might be left, depending on the tolerances of the cable and the print. Most of the friction holding the cable in place happens in the S-curve anyway.