*cube-test

This is a test STL file that I often use for nozzle testing. This size is enough. If it's too big, it's too useless, so this is what I've been using lately.

Use calipers to measure the length, of course. In addition, you should inspect the right angle. This adjustment is quite difficult. It is impossible to adjust the mechanism alone. The slicer needs to have a calibration function.