LaserUser.com Forum (formerly RDWorksLab)

So I noticed in LB, any objects that overlap, it turns the overlap white.
For example, in Corel you can set a fill color for text, and if you want it bolder, give it an outline.
LB creates a white area between these.
Is this just a Visual representation, to let you know you had overlap, or does that mean it will not burn these areas to prevent it being darker?

Also, is there a way to turn this optimization off, or a better way in Corel export to SVG to achieve a bolder font, w/o converting to curves, and new object?

Thanks,
Cad

Cad Jones wrote: Sun Oct 18, 2020 So I noticed in LB, any objects that overlap, it turns the overlap white.
...
Is this just a Visual representation, to let you know you had overlap, or does that mean it will not burn these areas to prevent it being darker?

LB uses only FILL property of the object for engraving. if 2 objects of the same layer overlap, the intersection is inverted (=white), and the "white" part is not engraved.

it is useful for invert engraving rubber stamps for example : draw a rectangle, and inside write some text of the same color. the rectangle will be engraved except at the letters.

if you have to overlapping shapes and you want to engrave all, you have to use the "union" boolean operation to "weld" the shape together.

for the visual representation, the "normal" mode just draw the "stroke" of the path, but you have an option to display the "fill". also, the best is to use the job preview to check which parts will really be engraved.

ok, cool, thanks Sebastian.
Just trying to understand what the software is doing prior to wasting material.

Thanks

Cad- I think you will find that wasting material is how we learn. There are many cheap materials and I have made piles of little pieces from larger pieces.

LightBurn uses what's called an "odd / even fill rule", which basically means that every edge encountered of the same color toggles the fill off & on. It's powerful when you're used to it, but odd if you aren't. Lots of design software treats filled areas like "paint", meaning you can just paint over something with another color. LightBurn only cares about the edges of shapes.

This might help a little: https://forum.lightburnsoftware.com/t/h ... raving/594