We use "VeryPDF AutoCAD DWG and DXF to PDF Converter" software to convert DXF files to PDF files.
https://www.verypdf.com/app/autocad-to-pdf-converter/try-and-buy.html#buy
https://www.verypdf.com/autocad-dwg-dxf-to-pdf/dwg_dxf_to_pdf_setup.exe
I have attached a DXF file that the converter struggles with. The DXF should have the lines I have arrows pointing to here,
The converter leaves those two lines out entirely.
We use version 2.2 of the software. It does not appear to have been updated in some time.
Customer
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Sorry for this problem, we suggest you may download DWG to Vector Converter Command Line from this web page to try again, this product does convert your DXF file to PDF file properly,
You may download DWG to Vector Converter Command Line from this web page to try,
https://www.verydoc.com/dwg-to-vector.html
http://www.verydoc.com/verydoc_dwg2vector_cmd.zip
after you download it, you can run following command line to convert your DXF file to PDF file properly,
dwg2vec.exe D:\downloads\FramSum.Dxf D:\downloads\FramSum.pdf