This is a difficult test print, if you like the style but want an easy print, check out the EZ (easy) version here:

https://makerworld.com/en/models/1053435?from=search#profileId-1040582

EZ-Printyplane and Test Printyplane can be identified by the antenna behind the cockpit (EZ version has no antenna).

This model airplane is a test print to test overhang angles, gap tolerances (vertical and horizontal), stringing, bed adhesion, elephant foot, and dimensions in all three axis both squared and circular. 

Overhangs of 40, 60, 65, and 80 degrees are designated for testing, with the 80 degree overhand being placed where if it fails the model should still come out nicely. 

The wings, tail, and windshield provide dimensions to test for accuracy on all three axis, and the wheels provide two circular test (inner and outer diameter).

Gap tolerances are tested with the two wheels having gaps of 0.3mm for the right wheel (If imagining yourself in the airplane), and 0.25mm for the left (so if one wheel spins and the other doesn’t you know its close), this tests the gap in the vertical axis. The gap check for the horizontal or longitudinal axis is with the propeller, the gap on the shaft is 0.25mm, and when it prints there is a thin layer only one nozzle thickness wide holding the internals of where the prop meets the rest of the plane, with a little force it should brake free and you should be able to spin the propeller.

To check for stringing, there is a radio antenna behind the cockpit that acts as a stringing test between itself and the tail.

Elephant foot and bed adhesion are tested by the propeller meeting the build plate, with one blade having 5mm square surface area and the other 2.8mm square.

After removing the print from the bed, you may have to push down on the wheels to “pop” them loose, and then lift them out and a small nub should be in place so the “click” out to the down position.

Feel free to do as you wish with this, it was a little passion project for me to make a cute airplane test print, I use 2 walls 0.2mm layer height for my test prints. For reference, my P1S takes 37 minutes and 11.76g of filament for one benchy on standard speed, and the airplane model takes 40 minutes and 13.75g of filament.

Thanks for checking it out!