New issue 463: DXF outputs with Qt internal scale https://bitbucket.org/valentinateam/valentina/issues/463/dxf-outputs-with-qt-internal-scale
David Arnold:
DXF files are putput with approximately 38:10mm which seems to be just about the internal scale of QPoints (37,8:10).
DXF shpuld come with deterministic and explicit scaling.