This is an improved calibration cube. It has 3 different sides so you can test x, y, and z axis calibration as well as have an average accross 3 different sizes
Additionally these are step file which is more precise than an STL
There is text in there to show whether your calibration is off due to features along the walls or just off altogether
Lastly, one cube has a 0.5mm fillet where the other one does not. This helps decipher if you calibration is off because of your pressure advance or if it is just plain off. The calibration will be correct on the fillet one and wrong on the non fillet one if your pressure advance is the issue.
This is just an all around better calibration setup than a traditional single cube.
The author marked this model as their own original creation.