More testing… I think I know an easy solution.
You know the gray “do not use” border in the UI? (Areas that the camera can see but where the head cannot travel.) They need to pull the bottom border (bottom UI = front of GF) up about 3mm.
I don’t think anyone will complain if they lose 3mm of cutting depth.
“But didn’t you say it was a 2"x3” area?" I was wrong. The bump happened at the bottom left. That screwed up the final element – which was in the 2"x3" area.
The workaround is to just skip a little bit more room at the bottom(UI) / front (GF). If the head doesn’t bump the door, then you’re fine.
Meanwhile, GF could be modified through software to detect this issue. During calibration, move the head all the way to each corner:
- Move from back-left to back-right to back-left and measure the length.
- Move from back-left to front-left to back-left and measure the length.
- Move from back-right to front-right to back-right and measure the length.
This will identify the actual cutting region. With the bump against the door, you should notice step 2 being a fraction different from step 3. If they have a way of saving calibration settings, then this measurement only needs to be done once (or once in a while) – and not every time.