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Common G-code

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Common G-Code

These are some of the basic G codes. There are a lot more but if you know these few commands there is no reason why cnc would not work for you. Don't be intimidated by those that come across as Guru's that indicate that you need superior intelligenence to run a cnc machine and to program it.

Commands:

G0
Rapid travel at maximum feed rate.

G01
Linear interpolation at current feed rate.

G02
Clockwise circular interpolation at current feed rate. X-Y plane only.

G03
Counter Clockwise circular interpolation at current feed rate. X-Y plane only.

G04
Dwell in tenths of a second. E.g. G04 X10 will dwell for 1 second.

G81
Drill cycle.

G90
Absolute coordinates (Assumed).

G92
Sets Coordinates

M0
Program Stop

M2
Program end

M7
Coolant On

M8
Coolant On

M9
Coolant Off

Txx
Tool change to tool xx

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