Getting vector shapes to fill+line properly (AI> SVG>Lightburn)

[Rick (Technical Evangelist)]

Welcome and thanks for this post. It looks like you have ‘Fill Rendering’ set. We don’t recommend using ‘filled rendering’ for much other than spot-checking your work. LightBurn works best in Wireframe mode, it is much easier to see what you are working with.

Layer's colors on canvas drawing priority

There are a few other gotchas to filled rendering that need to be addressed. The biggest being that when you are creating a shape with lines, but on a layer set to fill, it doesn’t draw the shape at all unless it’s closed. The code to determine whether a shape is closed or not is complicated, so I need to cache that value in the shapes and update it when they change, like I do with some others.

Set to 'Wireframe/Smooth and post an updated picture showing the entire LightBurn screen with the logo and I can offer some tips for achieving the look you are after.

This is a good read about how LightBurn uses shape boundaries to start and stop the filling of shapes.

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…