Quick Guide To The G03 CNC G Code [Tips And Tricks]

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Table of Contents

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  • What does a G03 code do?
  • Ready to master CNC programming?
  • What is circular interpolation?
  • G03 [counterclockwise circular interpolation] vs G02 [clockwise circular interpolation]
  • G03 vs G3
  • When to use a G03 code?
  • Other codes used with G03
  • Format for using a G03 code
  • How to turn off a G03 code
  • What to think about when using a G03 code?
    • Units
    • Absolute vs incremental mode
    • Start and stop locations
  • CNC codes that are similar to G03
  • Ready to master CNC programming?

What does a G03 code do?

G03 sets the CNC movement mode to counterclockwise circular movement, otherwise known as circular interpolation.

illustration showing how a cnc machine moves from the start to end point when using counterclockwise circular interpolation

G03 is used to move the CNC around along a specified radius set with the R code in a counterclockwise direction and at a feed rate set with the F code.

illustration showing the radius in a circular interpolation move

G03 is a modal command which means it will stay on until switched to another code in the same movement group of codes such as G00 – Rapid travel, G01 – Linear interpolation or G02 – Clockwise circular interpolation.

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