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[Rick (Technical Evangelist)]

LightBurn does not use line width as you can set that to any width and your beam is a fixed width. You need to convert the line width defined with your stroke to paths. LightBurn uses these paths to define the areas to be filled.

This might help in understanding how LightBurn uses boundaries to define fill areas.

How do I invert (negate) a vector engraving?

If you want to invert a vector engraving (Fill layer) you need to add an outline to it. Think about what happens when you scan a circle, compared to the letter ‘O’. The inner ring of the O toggles the fill. If you add another shape (like a square) outside it, it negates the whole thing: [image] And a slightly different example, this time done by changing the outer line around the design to a ‘Line’, instead of leaving it as part of the Fill layer: [image] In the case above, the design alr…