This app converts DStV-NC (NC1, NC) files to STEP files using CadQuery and PySide6 for the GUI
You can get the latest version from the Releases tab.
If you want to convert another CAD format to a STEP file, I recommend using your CAD software's native STEP export functionality. If you don't have a STEP export function, you can try exporting to IGES or another format, importing that into FreeCAD, then exporting to a STEP file from there.
I do not recommend exporting to a DStV-NC file in order to get a STEP file.
DStV-NC exporters are often buggy and imprecise. However, if you have a DStV-NC file and need a STEP file, you can use this program.