.SDNF File

The sdnf file extension is used for a special data exchange engineering format - Steel Detailing Neural File format.

Looks like a specially formatted ASCII text file. Information is structured into “packets” of information. It allows steel detailers to read models without redrawing.

How to open:

You can view or edit these files using any text editor.

How to convert:

You can import *.sdnf files to compatible CAD app and transform it to other CAD formats.