Scale Factor issues

[LightBurn (Oz)]

It sounds like the machine isn’t calibrated properly - LightBurn sends commands like “move 10 mm left”, so the machine needs to know how big a single step is in order to do that correctly.

How are steps calibrated?

That’s fairly easy, though it depends on whether your controller uses “step size” or “steps per mm”. They’re used for the same thing, but the calculation is a little different. 80 steps per mm is 1/80mm per step. If you tell the machine to make a cut that is 100mm across, but it comes out to 150mm, your ratio is 150/100, or 1.5. You would divide your steps/mm by that number, or multiply your step length by that number, to get the correct answer. So, if your machine used 80 steps/mm, you woul…

You can use Edit > Machine Settings in LightBurn to adjust the step length for each axis, and follow the instructions in the above post I liked for how to do this.