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Software for machinists and CNC programmers
Associating CNC files with EditCNC
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Right-click on the file you want to change the file association with and click Properties.
• In the file Properties, click the Change button next to the "Opens with" option.
• After clicking Change, you'll be given a list of programs to open the file, select the program you want to use and then click OK or Apply.
Illustrated instructions can be found at this page

Windows 8
• Search for "associate" by typing it into the Windows 8 Start menu. Hit the "settings" option.
• Select "Change the file type associated with a file extension" in the top left corner.
• Scroll down through the file extensions until you find the one that you want.
• Click on the file type, such as the extension NC. You'll see the current program associated with it on the right. Click "Change program" at the top of the window.
• Select a new program to open the file extension automatically, such as EditCNC.
Illustrated instructions can be found at this page

Windows 10
• Click “System,”
• then click “Default apps” in the column on the left.
• Click on any of the program icons to change the associations for the file type or protocol.
Illustrated instructions can be found at this page