NC1 File Extension

Xsteel CAD
- File Type nc1
- Developer CNC Software
- Popularity
- Application Tekla Structures software
- Category 3D Image Files
- Format Binary
What is a NC1 file?
The NC1 file extension is linked to Xsteel CAD and belongs to the 3D Image Files category, which includes 618 files.
The Xsteel CAD (NC1), created by CNC, is one of file format they developed, and they also built programs to support them.
NC1 files are supported by Windows and Mac OS. When working with NC1 files, you can rely on 5 programs, including Tekla Structures software, AutoCAD and FastCAM MTO.
Programs that support NC1 files
How to open a NC1 file?
If you can’t open a NC1 file, it is usually because the necessary software is missing. To resolve the issue, select the right program from the list for your operating system. Then go to the official website of the developer, download the software, and install it.
The most popular programs for working with NC1 files are Tekla Structures software, AutoCAD and FastCAM MTO. To install the latest version of Tekla Structures software on your computer, visit the Tekla website where you can download the version available for all operating systems.
Following installation, NC1 files should be automatically opened with Tekla Structures software.
Set Tekla Structures software as your default NC1 viewer
Changing the default program in Windows
- Right-click on your NC1 file, then choose the "Open with" option and select "Choose another application" from the available options;
- From the list of applications in the pop-up window, find and select Tekla Structures software as your desired application;
- Check the "Always use this app" checkbox, and then click "OK" to set your chosen app as the default for opening NC1 files.
Set default app to open files on Mac
- Right-click or Control + left-click on the desired NC1 file to open a menu of available actions;
- Select "Open in application" and click "Other";
- Look at the bottom of the window, where you will see the "Enable" menu. "Recommended Programs" will be selected as the default option;
- Within this menu select "All Programs" and navigate to Tekla Structures software. Check the box next to "Always open in app" to make sure it’s the default option.
Convert to and from NC1
If you have trouble working with a NC1 file, try converting it to DXF, DWG, IGS, STEP, IGES or similar 3d image files.
Please note that after converting a NC1 file, some functionality may differ from the original. However, in many cases, it can be converted back to its original format.
Convert NC1 to other file formats
Converting Files to NC1 Format
Solving Common NC1 File Challenges
When issues arise with NC1 files, they can generally be fixed with small software tweaks. Use the troubleshooting tips below to help resolve them.
What are the warning signs that my NC1 file may be corrupted?
Corrupted NC1 3d image files may have one or more of the following symptoms:
- Error messages appear during the course of working with the file;
- Poor performance when editing a file in Tekla Structures software;
- Attempts to open the file result in errors or failed results;
- Unexplained increase in NC1 file size;
- The file causes Tekla Structures software or other programs to hang or crash during operation;
Why does Tekla Structures software crash?
Tekla Structures software crashes can be caused by outdated software. Keep your Tekla products up to date by installing the latest updates.
A simple restart of your computer can often fix many common problems, which is why it is the recommended first step before making any adjustments to your software settings.
How to repair a corrupted NC1 file?
Use a data recovery program to open the damaged NC1 file and from the menu choose "Repair" function to start the repair process. Please be patient while the recovery process completes, which will automatically restore the damaged 3d image files.
How to edit a NC1 file?
To edit NC1 files, you need to install specialized software that allows you not only to open but also to modify 3d image files. Online NC1 editors usually provide fewer features than software created specifically for Xsteel CAD.
Best NC1 editors in 2026
Taking into account the provided details, we have prepared a list of NC1 editors that match your needs.
| NC1 Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Tekla Structures software | Tekla | Windows | 4.5 out of 5 (35 reviews) |
| AutoCAD | Autodesk | Windows, Mac OS | 4.4 out of 5 (37 reviews) |





