<p>BLTouch enabled Ender 3 w/4.2.2 board running <a href="https://github.com/mriscoc/Ender3V2S1" rel="nofollow noreferrer">mriscoc's Professional firmware</a>.</p>
<p>How is it that the auto tramming can report the corners of the bed to be level, and then immediately afterwards it produces this mesh?</p>
<p>What am I missing?</p>
<p><a href="https://i.sstatic.net/tiekC.jpg" rel="nofollow noreferrer" title="Photo of Ender 3v2 screen showing 'Corners leveled'"><img src="https://i.sstatic.net/tiekC.jpg" alt="Photo of Ender 3v2 screen showing 'Corners leveled'" title="Photo of Ender 3v2 screen showing 'Corners leveled'" /></a></p>
<p><a href="https://i.sstatic.net/PMvPA.jpg" rel="nofollow noreferrer" title="Photo of Ender 3v2 screen showing the Mesh Viewer"><img src="https://i.sstatic.net/PMvPA.jpg" alt="Photo of Ender 3v2 screen showing the Mesh Viewer" title="Photo of Ender 3v2 screen showing the Mesh Viewer" /></a></p>

CC BY-SA 4.0
2022-07-26T08:55:24.097Z
Still, other than a bug in the firmware, why would it do this? Am I misunderstanding tramming vs leveling?
benram14159
CC BY-SA 4.0
2022-07-26T15:08:01.013Z
Leveling is making the print bed parallel with the earth. Tramming is adjusting the print bed to be parallel with the XY-axis. (hope I got that right)
agarza
CC BY-SA 4.0
2022-07-26T15:09:31.757Z
Have you asked on the Github's discussion page about this issue? Since this is their area of expertise they may have a better idea about what the problem is.
agarza
CC BY-SA 4.0
2022-07-26T20:30:30.803Z
@agarza Leveling or tramming is explained in [How do you level (or tram) your build surface correctly?](https://3dprinting.stackexchange.com/a/19082/).
0scar
<bed-leveling><mriscoc><tramming>
Uneven mesh after perfect auto tramming?
benram14159
# Uneven mesh after perfect auto tramming?

(Asked by: username_0 on 2022-07-22)

BLTouch enabled Ender 3 w/4.2.2 board running [mriscoc's Professional firmware](https://github.com/mriscoc/Ender3V2S1).

How is it that the auto tramming can report the corners of the bed to be level, and then immediately afterwards it produces this mesh?

What am I missing?

[![Photo of Ender 3v2 screen showing 'Corners leveled'](https://i.sstatic.net/tiekC.jpg "Photo of Ender 3v2 screen showing 'Corners leveled'")](https://i.sstatic.net/tiekC.jpg "Photo of Ender 3v2 screen showing 'Corners leveled'")

[![Photo of Ender 3v2 screen showing the Mesh Viewer](https://i.sstatic.net/PMvPA.jpg "Photo of Ender 3v2 screen showing the Mesh Viewer")](https://i.sstatic.net/PMvPA.jpg "Photo of Ender 3v2 screen showing the Mesh Viewer")

**Tags:** bed-leveling, mriscoc, tramming
> **Comments:**
> **username_0**: Still, other than a bug in the firmware, why would it do this? Am I misunderstanding tramming vs leveling?  
> **username_1**: Leveling is making the print bed parallel with the earth. Tramming is adjusting the print bed to be parallel with the XY-axis. (hope I got that right)  
> **username_1**: Have you asked on the Github's discussion page about this issue? Since this is their area of expertise they may have a better idea about what the problem is.  
> **username_2**: @agarza Leveling or tramming is explained in [How do you level (or tram) your build surface correctly?](https://3dprinting.stackexchange.com/a/19082/).  

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## 0 answers

