The material thickness we enter into the GFUI isnt for laser focus, it’s for the lid camera image.
I’m not sure what the laser focus is actually doing at this point because if you put in a scrap or material with parts cut out already, the laser dot doesnt even hit it.
For the GFUI to get the material thickness from the focus laser, I think it would require manual placement of the head by the user to ensure the focus laser actually hits a target instead of the crumb tray or floor of the unit.
The laser focus used to take a reading right before starting the cut in the center of the material, and we ran into some issues with cutouts in that area. Now it takes a shot near the actual cut location, over the material, right before starting. (Something we ran into with the PRUs.)
If you are using Proofgrade, the Focal Point is set automatically for you at the surface of the material. For an Unknown Material, when you enter the thickness for the lid camera to use during placement, that value is automatically populated into the Focal Point slot in the Manual settings.
But you can over-ride that value if you wish to focus the beam at some other point inside the material or over the surface (defocus) the beam.
You always have to set a Focal Point of some kind or have one populate into the field. It can’t be empty.