PSA Chair Rail Fixing

If you have load in your car and want to fix it, you may want to use the existing chair rails. For that I made some kind of a mount for the chair rails in my Citroën Spacetourer (a car from the [PSA Group](https://en.wikipedia.org/wiki/PSA_Group)), where I can add a [M8](https://en.wikipedia.org/wiki/ISO_metric_screw_thread) screw and a [M8](https://en.wikipedia.org/wiki/ISO_metric_screw_thread) nut to create a fixing point. Even better if you use a [M8](https://en.wikipedia.org/wiki/ISO_metric_screw_thread) loop instead of a [M8](https://en.wikipedia.org/wiki/ISO_metric_screw_thread) screw.

The screw thread of the [M8](https://en.wikipedia.org/wiki/ISO_metric_screw_thread) loop should be about 4 cm long. See picture. Otherwise it will hit the ground before it can press the two components together.

Choose the printing material and infill with care, to get the maximum of robustness. My recommendation would be
- filament with better mechanical strength, such as PETG, ABS, ASA, etc.
- 5