Dimension or Axis Problem

LightBurn Hardware Compatibility
1

hello I’m using an Algolaser 40w diode laser and 1.7.08 of LB.
when I try to laser circle or rectangulars or texts I have some problems with the dimensions. there are some photos here. I don’t know what to do with that.

17474957293138438335616602505809
174749572931384383356166025058091920×2550 521 KB

17474957498776206640678891712809
174749574987762066406788917128091920×2550 465 KB

IMG-20250517-WA0010
IMG-20250517-WA00101440×2560 447 KB

IMG-20250517-WA0006
IMG-20250517-WA00061440×2560 488 KB

u
IMG-20250517-WA0004
IMG-20250517-WA00041440×2560 650 KB

as you see my rectangles are not closed from the right-bottom.
circles are like ellipses, texts are disaster.
normally there is no space between the rectangles on the lbrn file but there are spaces on output.
problematic.lbrn2 (64.6 KB)

thanks

2

This is almost certainly a mechanical problem. There are many such topics on this forum so a search will get you many results.

In short, do a full mechanical review paying particular attention to grub screw retention on pinion gears and belt tension. Based on your photos I’d say it’s most likely you have a loose pinion gear on the Y-axis.

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