Lightburn doesn’t engrave lower 1/16 of an inch of some letters and graphics

Lightburn doesn’t engrave lower 1/16 of an inch of some letters and graphics

I experienced a strange issue that I want to report.

Date – Dec/6/2023

LightBurn 1.4.03

Laser - Atomstack-X7-Pro

OS – Win11 Pro with all updates

Computer – Dell XPS 9500 with 40Gig RAM with all updates

The lower 1/16 of an inch of some letters and graphics was not engraving. And it was just some of the letters and graphics in the same design.

Attached are some pics showing what happened.

See pic showing #5, the bottom of the 5 did not get engraved. Also the small S got clipped. But the arrow graphic and the other text is fine.

See pic showing #3 and the sideways teardrop. The bottom of the 3 and the teardrop did not get engraved. The corner of the R got clipped as well. But none of the other text or graphics.

I’m guilty of playing with the settings to improve the engraving and speed it up if possible.

I finally found which setting I changed that started causing the issue.

In the “cut settings editor” I changed from “fill all shapes at once” to “fill groups together”. Using this setting reduced the engrave time by about 30 minutes.

It doesn’t make any sense to me why this change would cause that issue.

When I changed back to “fill all shapes at once" the problem disappeared.


Jim

my best guess - and you can run this test file in on a bit of cardboard to confirm - your Y belts need a bit of tightening

Dot Test with Angle.lbrn (46.3 KB)
Run the file and post image of result please?

Hello gilaraujo
As I said in my post, I resolved the issue.
In the “cut settings editor” I changed from “fill all shapes at once” to “fill groups together”.
I’m wondering if anyone has a logical explanation of why the setting “fill all shapes at once” would cause the issue.

If my thinking is correct, regarding belt tension, by changing to Fill Groups toguether you are shortening the fast travle motions, and therefore masking/mitigating the problem to some extent.
Not resolving them all toguether though

I would still review Y belt tension, squareness

Ahhh, interesting, I follow your logic.
I will certainly check it out.
Thank you.

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