SVG Import gives triple lines

LightBurn Software Questions
1

I exported a simple part as SVG out of FreeCad (called “flatend SVG” in FC) which consists of approx. 29 drawn lines. When I import this data, I get every “wire” three times. To prevent laser to go three times, I have to select and delete two of them.
Even firefox or MS Edge can draw that correctly. I looked into the text data, every line is just listed once.
If it helps, I can supply the original svg-file.
Thank you for your help.

2

If you’re willing to share the SVG file it should upload by dragging and dropping it into a reply here.

If the SVG file is private you can email it to Support@lightburnsoftware.com along with a link to this forum post and ATTN: John - I should get it within a few hours depending on the Support workload.

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I would try opening it up in Inkscape and taking a close look at the design to see what might be causing LightBurn to react as it is. There might be something in the FreeCAD output doing this.

Something else to try might be DXF output and again, close inspection of the design to be sure there really are single lines drawn.

4

Thanks Dough,
Proceeding from a 3D-Object FreeCAD isn’t able (at least in my version) to create a DXF, obviously more from a flat drawing object. Interestingly I have a 3D Design where I could get the svg data correctly (a sketch extruded in the Z direction, no mikro-chamfers). Usually I design the Sheet-material in 3D to see how everything fits together, in the last step I reduce that to 2D-SVG. I will play around to see from which detail it comes from. Merry Christmas to all!

5

I think if you do a projection of your 3D shape you can then get your SVG or DXF output.
https://wiki.freecadweb.org/Draft_Shape2DView

6

In the meantime I found the culprit, Freecad produces for unknown reason “N” lines for “N” segments of the full design and another two (long) lines with “N” single segments. Lightburn is innocent and gets the full rehabilitation! Thank you guys.
Greeting

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