<ul>
<li>Tune -> Bed Z</li>
</ul>

<p><a href="http://marlinfw.org/docs/features/lcd_menu.html#tune" rel="noreferrer">http://marlinfw.org/docs/features/lcd_menu.html#tune</a></p>

<p>Per description in this table, this refers to the Mesh Bed Leveling process. It allows to modify all saved mesh z-offsets by the given amount.</p>

<ul>
<li>Tune -> Babystep Z</li>
</ul>

<p><a href="http://marlinfw.org/docs/gcode/M290.html" rel="noreferrer">http://marlinfw.org/docs/gcode/M290.html</a></p>

<p>This just instructs the motor to move the given amount, once, without changing any parameters. </p>

<ul>
<li>Control -> Motion -> Z Offset</li>
</ul>

<p><a href="http://marlinfw.org/docs/gcode/M851.html" rel="noreferrer">http://marlinfw.org/docs/gcode/M851.html</a></p>

<p>Here we are talking about the offset of a z probe (e.g. BL-Touch) from the nozzle. </p>

CC BY-SA 4.0
2019-11-25T11:38:54.203Z
Nice overview! Noteworthy might be that the parameters under "Tune" are only available during printing, so it is to adjust settings during printing.
0scar
CC BY-SA 4.0
2019-11-25T10:50:23.540Z
2019-11-25T10:50:23.540Z
mikezter
<p>What is the difference between:</p>

<ul>
<li>Tune -> Bed Z </li>
<li>Tune -> Babystep Z</li>
<li>Control -> Motion -> Z Offset</li>
</ul>

<p>And when are you supposed to use "Bed Z"?</p>

<z-axis><print-axis-offset>
Marlin "Tune->Bed Z" vs "Tune->Babystep Z" vs Z Offset?
cds333
# Marlin "Tune->Bed Z" vs "Tune->Babystep Z" vs Z Offset?

(Asked by: username_0 on 2019-11-23)

What is the difference between:

* Tune -> Bed Z
* Tune -> Babystep Z
* Control -> Motion -> Z Offset

And when are you supposed to use "Bed Z"?

**Tags:** z-axis, print-axis-offset

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## 1 answers

### Answer by username_1 on 2019-11-25. Score: 8

* Tune -> Bed Z

<http://marlinfw.org/docs/features/lcd_menu.html#tune>

Per description in this table, this refers to the Mesh Bed Leveling process. It allows to modify all saved mesh z-offsets by the given amount.

* Tune -> Babystep Z

<http://marlinfw.org/docs/gcode/M290.html>

This just instructs the motor to move the given amount, once, without changing any parameters.

* Control -> Motion -> Z Offset

<http://marlinfw.org/docs/gcode/M851.html>

Here we are talking about the offset of a z probe (e.g. BL-Touch) from the nozzle.

> **Comments:**
> **username_2**: Nice overview! Noteworthy might be that the parameters under "Tune" are only available during printing, so it is to adjust settings during printing.  

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