M200 - Set Filament Diameter


Set the filament’s current diameter and enable volumetric extrusion.

In volumetric extrusion mode the E axis specifies cubic mm instead of linear mm, and the firmware calculates how much length to extrude for the given volume based on the filament diameter.


M200 [D<diameter>] [T<index>]

Filament diameter


Extruder index. If omitted, the currently active extruder will be used.


A common diameter close to 3mm:

M200 D2.85

Turn off volumetric extrusion

M200 D0
M200 D  ; also works