Lines offset 2 cm to the right of fill

LightBurn Software Questions
1

I have a fairly simple design that has some text and a logo set to Fill+Line mode (attached below) in a 3x3 virtual array. When I cut it, the lines are offset 2 cm to the right of where they should be (the fill is in the correct place).

lines offset
lines offset723×960 113 KB

(Note: I stopped the job before it did the line part of the bottom-right cell of the grid and the circles around the logos.)

lines offset closeup
lines offset closeup960×723 130 KB

I quit and restarted Lightburn and power-cycled my laser cutter - same results.

The preview in Lightburn shows the lines in the correct place.

I thought that this might be caused by the X belt slipping, however I don’t think that’s the case: the belt tension seems correct; there are no signs of wear on the belt; I can’t manually cause the belt to slip; and the slippage would have to happen exactly between the fill and line passes, exactly once. I think we can safely reject this hypothesis.

But it gets weirder: I went back to the .lbrn2 file that I used to create this one, identical except for the text being “Spanish Lace”. That printed just fine. Then I did a Save As to a new file name, changed the text to “Celtic Knots”, and printed again. To my astonishment the lines were again offset in exactly the same way.

I have sidestepped the issue for the moment (by doing only fill mode) but I still want to get to the bottom of this!

System: Chinese 6040 with a Ruida controller connected via USB to a Windows 10 laptop running Lightburn 1.0.06

Celtic Knots BACK.lbrn2 (82.2 KB)

2

Is this a new setup for you? Do other jobs work correctly?

At first glance I want to say this might be the known Ruida PWM issue but it doesn’t look quite right. And less likely if this is a machine that’s been working well for other jobs.

Configuring a Ruida - LightBurn Software Documentation

At first glance I don’t see anything unusual in the design file.

3

I’ve been using my laser cutter for three months. Most of my prints are slight variations on this pattern (texture sheets cut into laser rubber stamp material). I probably have a dozen different variations, and I’ve cut maybe 30 sheets so far. This is the first time I’ve seen a problem anything like this.

4

Not sure what else this could be. Let’s see what others have to say.

5

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