Hello, I've just received my lasercutter today, but the last week I have experimented a bit to prepare files for lasercutting.
As said before, PDF can either be vector or bitmap, my first experiments were with Heinkelmodel's Choktaw file in preparation for building.
This PDF is a vector, I opened it in Inkscape, removed the parts that are supposed to be glued on a thinner thickness of cardboard and saved the remaining parts as a SVG file, after that I opened Lightburn and imported the SVG file.
This is the result :
Keep in mind, that this is my very first cut with a machine like this.
The second kind of PDF, the bitmap kind, I opened in Inkscape again and hit Shift+Alt+B to trace the lines, I did this with parts of an old Maly model that I had scanned.
At first you see no difference on your screen, but when you click and drag the image, you will see that there is another copy under it... actually, it is the "original" that is underneath ; you can select and delete that one. The remaining one can now again be exported as an SVG linedrawing and manipulated in Lightburn.