Not good for CNC working - MIT License (btw. ezdxf ( documentation) → conversion from DXF to SVG works basically very good but creates large 'stupid' files.missing parameter for granularity - MIT License → works but polylines are a bit rough.

That makes it harder to work without data loss or errors like offsets, wrong scaling, etc.

An also commonly occuring problem to solve is a conversion between DXF to SVG or vice versa because a lot of programs use only the one or the other format to perform steps like nesting or line optimization. DXF and SVG are commonly used file formats to describe vector data for machine production (like laser cutters or waterjet machines).