Yes, I tested using the circumference and drawing a rectangle all the way around as mentioned by the moderator on another question and ends met up exactly.
I was just saying that I found if the item is 100mm wide it measures 100mm wide on the cup. It looks oval. Kind of an optical illusion because of the roundness.
Do the square and the circle on the same piece and post a photo, along with screenshots of the layer and rotary settings. Something isn’t making sense…
If the test button in the gui rotates the rotary one complete turn and back, it’s configured correctly.