Focal distance set using material library - incorrect distance

[mattklev1 (Matt)]

Hi I have a gweike cloud RF laser.
I’m new to LightBurn.

I’m trying to setup my material library.
I’ve set the material thickness property’s as such:

I also have light burn configured to control the Z axis.

When I start the cut. The Z axis moves to the material thickness property I have set in the library.
But I would like to add an offset to the this. Or maybe I have something miss configured in my machine.
If I set the material thickness to 6.35mm, I would expect the z axis to move to the z position 10.35mm.
But currently, the Z axis is always moving to what ever the material thickness is set to in the material library in this case 6.35mm.

The machine settings are configured like this:

I tried to adjust the Focus distance parameter, that doesn’t seem to make a difference in this behavior.

[berainlb (PY)]

You’re the third Gweike user in the last couple of weeks facing issues with Z-axis/focusing.

Autofocus crashing laserhead into workpiece

Hi there, I have a problem with my Gweikecloud RF lasercutter. I have enabled Z-axis in device settings to be able to control the laser focal point through Lightburn. When I move the Z-axis down from the “move” window, followed by starting a printjob, it works fine. The machine will finish the job, moves the Z axis back up, and the printhead goes back to its home position afterwards. The issue becomes apparent when I enter a Z offset (-5mm in my case) within the cut settings editor (instead o…

Problem with z crashing - Gweike cloud

Is this some setting that makes this happen? Every time i finish a cut it will defocus and crash into the material and goes back to home position. See video.

I almost wonder if Gweike deserves its own section.

In any case, would be good if you can put your heads together on this.

[mattklev1 (Matt)]

Thanks for linking us up