New, updated version of the test model are available here:

For detailed prints:
https://www.printables.com/model/342302-overhang-test-for-detailed-prints

Regular test:
https://www.printables.com/model/342481-overhang-test-regular

With this model, you can test the quality of the overhangs. The four segments are designd to show any difference in direction of the slope, to show weeknesses of part cooling only from one direction. The numbers indicate the angle between the segment and the vertical line.

The base plate has indications for X and Y directions, so later you can compare it with reprints (for example after a fan duct upgrade).

Printing tip: set the seam to the inner part (to the side with the numbers) of the arches. In prusaslicer use "paint seam", in cura, set the seam relative to the model to (0,0).

If you found this model useful, consider giving it a like! :)