The File Extensions Database

.CNC File Extension

  • Developer by: Denford
  • Category: CAD Files

What is an .CNC file?

.CNC is CNC Machine Tool Path

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.

CNC milling machines are used to remove material from an object using rotary cutters. These machines are controlled by computers to execute pre-programmed machine control commands. The CNC file is created by QuickCAM Pro to contain a path that is loaded into a CNC milling machine to direct its milling.

NOTE: CNC stands for computer numerical control.

Programs that open CNC Machine Tool Path
Denford QuickCAM Pro
File Type 2 PartMaster CNC File
Developer by: Dolphin Cad Cam Category: CAD Files Format: Binary

CAD file created by Dolphin PartMaster, a CAD/CAM application suite used for designing and manufacturing components; stores toolpath coordinates for a machine tool, such as a drill, for creating a manufactured part; can be visually simulated in the software.

CNC files cannot be used directly on machine equipment since they are not recognized by specific machine tool controllers. Therefore, CNC files must be postprocessed using the Post Processor (Dpost.exe) program included with PartMaster. Post Processor creates tool path data (TPD) files that can be translated into a format that is usable by the machine tool.

NOTE: CNC files are created by PartMaster CAM (Dcam.exe), one of the programs provided with the PartMaster application suite.

Programs that open PartMaster CNC File
Dolphin Cad Cam PartMaster

How to solve problems with CNC files

  • Associate the CNC file extension with the correct application. On :
    Windows: Right click on any CNC file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.CNC files". Mac: Right click (or Ctrl-click) the CNC file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .CNC is CNC Machine Tool Path. Because only the current version supports the latest CNC file format. Search, therefore, e.g. on the Denford manufacturer website after an available .CNC is CNC Machine Tool Path update.
  • To make sure that your CNC file is not corrupted or virus-infected, get the file again and scan it with antivirus software.