Almost every CAD drawing, or even 3D model can be exported and saved as PDF document for preview purposes. The catch is usually to find a program that can open your CAD file (in this case .nc1) and export it as PDF. This may be tricky for some less supported formats, but it should be doable.
Convert Xsteel CAD drawing to Adobe Portable document format.
We found one software available in the database for this conversion.
Microsoft Windows software - convert nc1 to pdf on Windows
Leading 2D and 3D CAD development software from Autodesk
Convert from nc1 file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.