Opening a CSG File

The CSG file type is primarily associated with OpenSCAD.

CSGFile Extension CSG
File extension: CSG
File type:  3D modeling file

What is a CSG file?

CSG files mostly belong to OpenSCAD. CSG files are used primarily to store 3D modeling data in a text format. They hold instructions based on Constructive Solid Geometry (CSG), a method for creating complex shapes by combining simple 3D forms with Boolean operations.
In many cases, these files are created and used in computer-aided design. For example, OpenSCAD uses them as 3D geometry text files where every operation is defined in plain text.
There are other variants as well:
  • Some CSG files serve as 3D geometry files in game development, as seen with the Fallout 4 Creation Kit and tools like Hammer (Fallout 4 Creation Kit reference).
  • Other instances include Windows settings files, showing that the extension sometimes handles system configuration data or CAD geometry data.
  • Some files even function as Cardiac Signal Files for programs like Biopac AcqKnowledge, though they also reference geometry information.

  • FilExt.com notes: If you have a CSG file, inspect its contents with a text editor to check for patterns or keywords. This can help you determine whether the file is for 3D modeling, game design, or another purpose. Then, open it in the proper viewer or editing software accordingly.

    How to open CSG files

    You need a suitable software like OpenSCAD to open a CSG file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your CSG file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a CSG file directly in the browser:. Just drag the file onto this browser window and drop it.

    Online CSG Text Viewer

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    Programs that open and convert CSG files:

    1. OpenSCAD
      See the previous paragraphs to learn more about the main application. CSG files are often referred to as OpenSCAD cads because this type of file is primarily created or used by this software.
    2. Statistica Graph File

    Technical Data for CSG File Extension

    File classification:
    CAD
    Related files:

    The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

    ProgramID: Checkers.Document
    EXEFile: %ProgramFiles%\MVPSOF~1\MVPCHE~1\MVPCHE~1.EXE %1

    ProgramID: Checkers.Document
    EXEFile: %ProgramFiles%\eGames\Checkers\MVPCHE~1.EXE


    a csg 3D modeling file is a special file format and should only be edited and saved with the appropriate software.

    How to solve problems with CSG files

    • Associate the CSG file extension with the correct application.
    • Update your software that should actually open 3d modeling files. Because only the current version supports the latest CSG file format. Search, therefore, e.g. on the manufacturer website after an available OpenSCAD update.
    • To make sure that your CSG file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
    • Click here to open your .CSG file online - secure, fast, and no downloads needed.
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    CSG file viewer CSG file description