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Basic information about CNC file

When there is a problem with opening files with the file extension CNC（*.CNC or *.cnc）, you do not need a computer expert. In most cases, using the helpful suggestions of experts contained in our website as well as appropriate programs, you can solve the problem with the CNC file yourself.

There are 2 file types using the CNC file extension in our database. In the further part of this page, you will find detail information about all the CNC file with their brief description and a list of programs that support CNC file sorted by operating systems. The table below provides useful information about the CNC file extension. It answers questions such as:
  • What is the CNC file?
  • How to open a CNC file?
  • What programs do I need to open a CNC file?
  • What programs help to create and edit a CNC file?
  • How to convert CNC files to another file format?
  • How to convert another files to CNC file format?


1.Detail information about CNC file extension: CNC Machine Tool Path

File type CNC Machine Tool Path Category CAD Files
Developer Denford File format N/A
Description CNC file is a CNC Machine Tool Path developed by Denford. A CNC file is a path file created by QuickCAM Pro, a program used to create cutter paths for machining 3D parts on a milling machine. It contains path instructions for cutting a 3D part using a CNC milling machine. CNC files can can be created from 3D models or 2D images.
Software programs that will open, edit or convert CNC files

Windows		 Denford QuickCAM Pro


2.Detail information about CNC file extension: PartMaster CNC File

File type PartMaster CNC File Category CAD Files
Developer Dolphin Cad Cam File format Binary
Description CNC file is a PartMaster CNC File developed by Dolphin Cad Cam.
Software programs that will open, edit or convert CNC files

Windows		 Dolphin Cad Cam PartMaster
QuickCAM 2D



Can't open a CNC file?

When you click a file to open it, operating system examines the filename extension. If operating system recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When operating system does not recognize a filename extension, you receive the following message:

”Can't open this file: example.CNC”。

To open this file, you install one of the applications from the list of software programs that you found here, you should be able to open, edit or convert the file with the CNC extension without any issue.


Where I can download the application that support CNC file?

If you do not know where you can download the application from our list, click on the link (which is the name of the program), you will find more information there on the location where to download the required application. Most often they are the websites of software manufacturers.


How to change file associations?

  • Right-click a file with the extension whose association you want to change, and then click "Open With".
  • In the "Open With" dialog box, click the program whith which you want the file to open, or click "Browse" to locate the program that you want.
  • Select the ”Always use the selected program to open this kind of file” check box.


Can I change the extension of CNC files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read/open the file. The problem is, changing the file extension does not change the file format. Select a software program from our list and install it on your computer. If the file has not opened correctly, you have to look for a different software program from our list. Sometimes you have to repeat the operation several times.


What else may cause problems width open a CNC file?

The reasons for the lack of the ability to open a CNC file on your computer may be at least several. The easiest thing is to find a suitable application installed on your computer, which will open a CNC file. If there is still something wrong, you might want to check:

  • Whether the CNC file is damaged.
  • Whether the CNC file is incorrectly linked in the registry entries.
  • Whether the CNC file extension has been accidentally removed from the Windows registry.
  • Whether the installation of an application that supports the CNC file format is incompletely.
  • Whether the CNC file is infected.
  • Whether the drivers of the equipment used for opening a CNC file are up to date.
  • Whether your computer has enough hardware resources to open a CNC file.

If the CNC file still not working with your software after eliminating the above shortcomings? That means that the problem is more complex and requires the help of a specialist.