This is a stopper designed for a sliding baby or pet gate. It can be required if the intent is to have the gate open all the way and parallel to a wall (if the gate is fully retracted, it may touch the wall before the gate is parallel).
Heated bed plate temperature 65 degrees Celsius. Extruder temperature 215 degrees Celsius.
I measured the width and thickness of the horizontal bars (at the top) and sketched a 2D base. I extruded the rough shape which resembled: _|
Then, I measured the diameters of the screws that I intended to use and extruded out two screw holes.
Finally, I rounded the edges for style and strength.