Lines of provinces on the borders are repeated (overlapping). The lasercutter passes twice on each border increasing the cutting time and decreasing the quality.
I tried the “remove overlapping lines” option but it doesn’t work.
Any solution?
I am using Inkscape and it is very tedious to remove the repeated lines
If you are tracing the map as a raster image, LightBurn will convert each line into two vector paths, separated by a small space. Because they’re not exactly overlapping, the Path Planner optimization won’t remove one.
Perhaps increasing the overlap tolerance (in the Optimization settings) will do the trick. Try zooming in on the offending lines, measure the separation, and use 1.5× that distance. Make sure it’s not removing anything else of interest, though.
Inkscape has a centerline trace function that should create one vector down the middle of (most) raster lines, which may produce better results.
The map of Sweden I shared is not the best example because of these red lines. Forget about them
The black lines are provinces, if one ungroups them you can see how the border lines are repeated, here I separate I province and you can see how the two lines are the same
Having each province as a separate entity makes it easier for folks creating jigsaw puzzles, as they can apply kerf adjustments to each piece. In your case, that’s not helpful.
However, I did this:
Import that SVG unchanged
Put it on a cut layer
Turn on Optimize Cut Path
Select Remove overlapping lines with a 0.025 mm tolerance
Run Preview
The laser path then covers all the lines exactly once, without duplicating any of the overlapping sections.
That happens regardless of whether the entire map is grouped into a single object or it’s ungrouped into separate provinces.
So the question is: what’s different between your LightBurn configuration and mine?
I’ve had some art that has a line right on top of the other line. If I select it, I can delete the extra line. The moving ants when selected actually has a different look to it…
Give @ednisley method a try and see if that works… I’ve never tried with a bunch of lines…
