m3 [smoothieware.org]

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== M3 G-code

M3 means "start the spindle at a specific speed".

A spindle is a controlled motor that turns a tool ( endmill ) at a given speed to allow it to remove material from the workpiece.

The M3 command must be accompanied by a <kbd>S</kbd> parameter which sets the speed of rotation.

M3's evil twin is the [[M5]] command which turns the spindle off ( it is equivalent to <kbd>M3 S0</kbd> ).

=== Format

The command is used as such : 

<code>
M3 S1000
</code>

Which means : start the spindle and make it turn at 1000 rotations per minute.

=== Parameters

^ Parameter ^ Usage ^ Example |
| <kbd>S</kbd> | The spindle must turn at this speed in rotations per minute | M3 S1000 |

=== Configuration

The spindle functionality of Smoothie is configured via the [[/spindle-module|Spindle]] module

=== Further reading

These resources are used as references for Gcode : 
* [[http://linuxcnc.org/docs/html/gcode.html|LinuxCNC Gcode list]]
* [[http://reprap.org/wiki/G-code|Reprap Gcode list]]