<p>There is nothing to worry about, this is a <a href="http://marlinfw.org/docs/features/lcd_menu.html" rel="nofollow noreferrer">feature not a bug</a>.</p>

<p><code>Extruder</code> refers to the active extruder, the <a href="https://reprap.org/wiki/G-code#T:_Select_Tool" rel="nofollow noreferrer">loaded/active tool</a>. Based on the active extruder the <code>Extruder</code> controls either your <code>Extruder E1</code> (this is known in the firmware as <code>Extruder E0</code>!) or your <code>Extruder E2</code> (the <code>Extruder E1</code> from the firmware).</p>

CC BY-SA 4.0
2020-01-11T08:28:09.793Z
2020-01-11T08:33:41.313Z
2020-01-11T08:33:41.313Z
0scar
<p>I've recently added a second hotend and extruder assembly to my 3D printer and I've made all the necessary changes in the firmware. I've defined the temp sensor for hotend 2, all the pins for heat and temp as well as defined extruders as 2 instead of 1. </p>

<p>The problem is that the printer display in the motion menu is showing </p>

<ul>
<li>Extruder</li>
<li>Extruder E1</li>
<li>Extruder E2</li>
</ul>

<p>"Extruder" and "Extruder E1" both control the primary extruder and "Extruder 2" controls the second extruder. </p>

<p>Any tips, ideas, suggestions?</p>

<marlin><extruder>
Marlin firmware question for dual extruder
Korner19
# Marlin firmware question for dual extruder

(Asked by: username_0 on 2020-01-11)

I've recently added a second hotend and extruder assembly to my 3D printer and I've made all the necessary changes in the firmware. I've defined the temp sensor for hotend 2, all the pins for heat and temp as well as defined extruders as 2 instead of 1.

The problem is that the printer display in the motion menu is showing

* Extruder
* Extruder E1
* Extruder E2

"Extruder" and "Extruder E1" both control the primary extruder and "Extruder 2" controls the second extruder.

Any tips, ideas, suggestions?

**Tags:** marlin, extruder

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## 1 answers

### Answer by username_1 on 2020-01-11. Score: 2 | Accepted answer

There is nothing to worry about, this is a [feature not a bug](http://marlinfw.org/docs/features/lcd_menu.html).

`Extruder` refers to the active extruder, the [loaded/active tool](https://reprap.org/wiki/G-code#T:_Select_Tool). Based on the active extruder the `Extruder` controls either your `Extruder E1` (this is known in the firmware as `Extruder E0`!) or your `Extruder E2` (the `Extruder E1` from the firmware).


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