flexi-bot/docs/marlin/_gcode/M404.md
2023-09-05 20:38:49 +02:00

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---
tag: m0404
title: Set Filament Diameter
brief: Set the nominal diameter for filament width sensor auto-flow
author: thinkyhead
requires: FILAMENT_WIDTH_SENSOR
group: control
codes: [ M404 ]
notes: Requires `FILAMENT_WIDTH_SENSOR`.
parameters:
-
tag: W
optional: true
description: The new nominal width value
values:
-
tag: linear
type: float
examples:
-
pre: Set the diameter to 1.75mm
code: M404 W1.75
-
pre: Get the current width
code:
- M404
- '> Filament dia (nominal mm): 1.75'
---
Report or set the nominal filament width, such as 1.75 or 3.00.
This value is used to determine the percentage difference when auto-adjusting flow in response to the measured filament width, and should match the value used for filament width in your slicer settings.