Your best choice for exporting / saving CAD data to NC1 format from Xsteel would be to use Autodesk AutoCAD or similar software that supports it.
Convert ISO-10303 STEP product data to Xsteel CAD drawing.
We found 2 software records in the database related to .stp to .nc1 file format conversion.
Microsoft Windows software - convert stp to nc1 on Windows
Leading 2D and 3D CAD development software from Autodesk
Convert from stp file format
|Yes, AutoCAD supports stp file conversion as a source file type.||Yes||Yes||stp editor||No||No||No||No|
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned stp to nc1. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Apple macOS / Mac OS X software - convert stp to nc1 on OS X
Mac version of popular Autodesk AutoCAD software