The drawing is a closed SVG vector line, but the cutting path preview always fails to cut at the place where the laser head turns to change position, what is the reason and how to solve it

LightBurn Hardware Compatibility GRBL
1

The drawing is a closed SVG vector line, but the cutting path preview always fails to cut at the place where the laser head turns to change position, what is the reason and how to solve it

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25241742824234_.pic_hd1080×1920 182 KB

2

It looks like your mechanics are not set up correctly. You are loosing steps in many places. Make sure everything is tight and stable.

3

The first thing I’d try is to zoom in on the area in issue and verify that the lines are connected. It looks like the image was scanned and not drawn as the lines are rough. I had this happen on a scanned image and had to go in and connect the lines.
Or click in that area and either group or ungroup the area to ensure there are no breaks in the lines.
I had this problem on a TRACE as well and had to zoom in and add break points and then connect them to get my image to cut correctly, might be the same problem you are having.

4

As Chuck writes, your example looks very rough and not laser -friendly. Your laser is trying to follow the original file, it should cause problems. Send your file up here and we can try to optimize it.

5

After zooming in, the line is a vector drawing that is continuously closed, how to set or modify the processed line to be continuous without breakpoints. Help me check that I’ve sent the svg source file to the attachment

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xizi

6

After zooming in, the line is a vector drawing that is continuously closed, how to set or modify the processed line to be continuous without breakpoints. Help me check that I’ve sent the svg source file to the attachment
xizi

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7

I looked at your file and don’t see any problems there. I believe you may have a mechanical problem with your machine. Load this file, sacle it proportionately to fit your bed and run it at high speed with just enough power to get a good mark on cardboard. Any discrepancies from the file will indicate machanical problems. Upload a photo of the results so we can look with you.
BacklashTest.lbrn2 (68.8 KB)

8

This is the result of the cutting with the test file you sent, please see the cutting effect, please ask what is the problem with my machine, so that I can report to the manufacturer to solve the problem or fix the setting problem myself …

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9

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This is the cutting and picture contrast effect。 Please help me see what the problem is

10

You had your power set way too high for the test. It shouldn’t burn through, but I still see that you have play in what appers to be your Y axis. You don’t say what type of machine you have (Diode, C02, etc.) but this site should help you diagnose the issue. It’s written for Sculpfun but most are similar.
Until the test file output matches the file you will never have good results from your machine.

11

Can you upload file and I can try running on my laser, if it works then it isn’t a LB issue it is your laser adjustments or controller.

12

Your file has about 22000 nodes. It appears to be a poor trace. Can you post the original JPG or PNG file that it was traced from?