Be sure to check out my other calibration items:
https://www.thingiverse.com/thing:4825773 - Calibration Squish Ingot (Bed Levelling)
https://www.thingiverse.com/thing:4769155 - Calibration Coin (Test for filament change)

I wanted to create a calibration cube that was a little larger than most (25mm instead of 20mm) and that would test your printer a little more. So each edge and corner has a smooth fillet, even those on the bottom of the cube, which will test your adhesion just a little more (this cube is perfectly fixed to a levelled and clean bed). It also includes the Picasso name on the bottom of the cube which will also help you identify the perfect squish and whether you have any X/Y alignment issues.

This cube can be printed at a variety of qualities and depending on which you chose, the more likely it will help you identify slight issues with your print setup. Need a quick print, go for 10% infill, 0.28 Print Quality. Want to really look for issues, go with a 20% infill with 0.16 Print Quality

There are no supports needed

Creality

Ender 3

No

No

0.2

15