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Mastercam Lathe Diameter or Radius Mode

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I have a cnc controller for my type of lathe machine. I use mastercam for take gcode, but this software give x axis dimension as diameter. My cnc controller want radius for x axis so I want to change mastercam lathe nc code diameter mode to radius mode. How ı do it

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What is the post you are using?  I believe its going to be a switch in the post. 

 dia_mult     : 2     #Multiplier for output on X axis (Neg. switches sign of X)

Changing the 2 to a 1 will output radius. Be sure to back up your post before making any changes to avoid loss of data.

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