I used this simple sliding clip for storing AXA toolholders behind my lathe. The holders slide along 1" (25mm) aluminum extrusions. This was my first print after building my Prusa. I printed them in draft mode, 15% infill and raised the skirt a couple of layers to help with blocking airflow on the varying corners to keep things flat. The print is about 40 minutes.
These are a little loose. I mount my rails on a slight backwards incline, see photo, so the tool holder is held with gravity and allows for easy removal, easy put-away and easy sliding of the clips along the rails for quick reorganization.
The author hasn't provided the model origin yet.