Good Evening,
Can anyone help me setup my Polar Lite with Lightburn , I have googled and searched the forums but for the life of me can’t get the autofocus to function.
I have tinkered with all of the device settings
The Z Axis is mechanically sound , when i adjust it manually it will reset when powering on the machine
no combination of settings seems to work and I must be missing something , please help
Hi @sfurnojr
In Laser Tools → Device Settings → Dimensions / Units, try:
Enable Z Axis: on
Relative Z Moves Only: off
OMTech Polar: on
Optimize Z Moves: on
Then make sure you enter the actual material thickness in Cuts/Layers before running the job. Don’t leave Material height at 0 with Z enabled.
Docs for the OMTech Polar setting are here:
This GWeike guide may also be useful, as the Z behavior appears similar:
https://forum.lightburnsoftware.com/t/how-to-use-gweike-cloud-with-lightburn-tips-tricks-faq/97874
Thank you for your quick reply , two things .
I was able to get the Z-axis working after removing the polar lite cover and fiddling with all the electronic connections.
To your point , this model has an autofocus and I believe the built in depth is 17mm , when I use the autofocus function it taps the material and then backs itself out accordingly , I have left the z axis at 0 and have not inputted the material thickness .
So now my question is should I still tinker with the z axis mm settings given the autofocus function ?
Hi @sfurnojr
Glad it’s moving now. If checking the connections fixed it, that points more toward a loose connection than a LightBurn setting.
For now, I’d keep it simple: use the machine’s autofocus first, then run a simple test with Relative Z Moves Only enabled so LightBurn treats the focused position as the starting point.
Only use the material thickness/Polar Z workflow if you specifically want LightBurn to manage Z height during the job.
