10x10x10 cm calibration test

I had trouble finding a quick to print and filament saving calibration print for my new Ender 3.
The structure is quite rigid and lets you easily calibrate your stepper motors.

I think 10x10x10 is the best choice between accuracy and print speed.
Size does matter here since you are measuring/calculating very small deviations.
This calibration can be printed in 0.2 mm without infill and supports.

At 60 mm/s it took me not even 30 min.

Comments welcome!