Should have only taken a few minutes but here’s what is happening:
I imported a .dxf file into lightburn. In attempt to get a snug fit for my 1.5mm acrylic I adjusted the kerf on the holes outward slightly. Sometimes I would break the vectors up using the Break Apart command and sometimes I wouldn’t . Who would have thought that it matters. But it turns out that there is a substantial difference in the resulting hole sizes. You can see it for yourself by previewing the job. This goes for shapes generated in LightBurn as well. (See the rectangles in the file below)
[Duplicate Holes that aren’t] (https://1drv.ms/u/s!Ap7obl01p2cr1XsCBJ1VC2YQI3px)
If there is a reason for this then I cannot fathom it. My guess is that LightBurn doesn’t recognize inner and outer when an object is broken up and the kerf setting isn’t being applied properly. I don’t know which form is the intended right one. (broken up or whole)
When you remove the kerf offset the holes all match in size in the preview.
I can’t figure it out and even if I did I would have to have layers with different settings for both Broken apart objects and whole ones.
Any suggestions? If I just break everything apart then they would all be the same but it seem that shapes like squares that LightBurn generates are not broken apart by default. Is there a preferred state? (Connected vs Broken Apart)
This may also be related to another issue I have of lines on the table border not being cut as the kerf offset might be pushing the lines out of bounds. I am not sure yet.
Windows 7 and 10 machines act the same. LB 8.07