What is an NC1 file?
An .NC1 file contains numerical control instructions for manufacturing machines. Primarily, the .NC1 format is used for the DSTV (Deutscher Stahlbau-Verband) standard in steel fabrication. It stores exact measurements, drill hole coordinates, and cut paths for structural steel parts. Tekla Structures and other structural detailing software frequently generate these files. A secondary use for .NC1 files is the Mastercam Numerical Control File created by CNC Software. Both formats instruct machinery, but they serve different industries.
How to open NC1 files?
Because .NC1 files are text-based, you can open them with a basic text editor like Notepad++. However, reading the raw coordinates requires technical knowledge. Steel fabricators use specialized DSTV viewers or CAM software like Mastercam and Tekla Structures to visualize the actual part geometry and send the instructions to the CNC machine.
Analyze and View Online
Since an .NC1 file has multiple possible meanings, we recommend using viewer.online/nc1 to identify the actual format of your file. Our platform can analyze .NC1 files to identify the exact format and creator software, inspect the file structure, extract readable text, and check whether an online preview is available.
Software and Conversion Tools
If you need to share .NC1 data with contractors who do not use specialized CAM software, converting the file is a standard practice. We recommend using convert.guru to convert .NC1 files to sensible target formats like .DXF for CAD visualization, or .TXT and .CSV for readable data extraction.
Summary
viewer.online/nc1 is useful for identifying, inspecting, and understanding .NC1 files without installing software or dealing with compatibility problems.