I’m having several issues with SU 2018 DXF export. It doesn’t matter which DXF version. I have checked all the options. Here is a very simple skp file. I included the arc inference so we all know that it is an arc and that the proper geometry exists. Also be aware that the Label 3 is made up of 2 arcs. I have added construction points for the small circles.
I then export the skp as a DXF and then either look at it from another CAD system or import it back into Sketchup. Either way the drawing now looks like this.
Additionally the DXF now is composed of Blocks which is not compatible for the CAM software we want to use.
test_part.skp (29.7 KB)