Cutter Radius Compensation Explained, Beginner CNC Milling Lesson 15

Learn the basics of Cutter Radius Compensation in Lesson 15 of Know-How Compass’s beginner CNC mill training series. Understand why the cutter’s center follows a different path than the finished edge, and how compensation accounts for the cutter’s size. In this lesson, we cover: • G41, G42, and G40 explained • Left and right compensation based on travel direction • D offsets and radius versus diameter values • Full compensation versus wear compensation • Proper lead-in and lead-out movements • Common mistakes that cause gouges, alarms, and incorrect dimensions Follow along with clear diagrams, practical examples, and review questions to strengthen your CNC programming knowledge. Always follow your machine’s documentation and approved setup procedures. Subscribe to Know-How Compass for more beginner CNC machining lessons. Practical skills. Clear lessons. #CNCMachining #CutterRadiusCompensation #CNCProgramming #CNCForBeginners #CNCMilling #GCode #Machinist #Machining #KnowHowCompass