I have a suggestion that I wanted to run by you for auto calibration of the camera.
I’m thinking that I should be able to put an 11" x 17" piece of paper into the bed of the machine.
That paper is cheap and easily accessible to everyone on the planet.
Then, run an auto-calibration program within your UI.
It would have 5 cross hairs. 1x in the center and 1x for each corner.
The auto-calibration would score or cut the cross hairs and then use the camera to see the results.
Based on the results relative to the intended cut, it would automatically calibrate the camera so that the next print would actually cut where it is supposed to according to the image.
Just a thought.