Hi,
Just got a new laser tube from American Photonics called lenspro with the magnetic lens for my Gweike Cloud. Since the new focal length is 3mm shorter, how would i go about in Lightburn to change from the standard 50,8mm to 47,8mm ? Or am i just going to have to add 3mm to the material thickness field each time? 
Thanks!
i mean subtract 3mm from thickness field, is there a workaround?
What’s the model of laser exactly?
Normally, you would do a “ramp test” to find the right focus distance.
Or if you have a motorized Z-Axis, a “Laser Tools > Focus Test” in LightBurn.
Yepp, ive got the Gweike cloud so it has motorized Z axis, will try the test but i still need to know how to alter the set parameters for this laser in Lightburn i guess …
Dont know if im not understood correct but as Lightburn puts the z-axis according to what thickness i have set the material to, earlier the focus distance was 50.8mm original, now its 3mm shorter (higher up) 47.8mm. Just want to find were in lightburn i can offset this instead of having to subtract from materialthickness setting
Maybe your looking for this
Remember to follow right-hand rule.
Thanks, whats the right hand rule? The Z-offset seems what i need, but is there a way to alter the configuration already in lightburn for this Gweike Cloud laser?
It’s a convention rule to set axes orientation and positive values direction.
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