<p>Finally, after a year I have found a solution! Posting it here in case someone else has the same problem.
Following by a suggestion from <a href="https://github.com/mriscoc/Ender3V2S1/issues/614" rel="nofollow noreferrer">Leveling does not work reliably on some Ender3S1 F4 printers (mechanical issue)</a> I printed a new mount for the CR Touch with a zero Y-offset, and it worked magically! I still don't know why it works, but it works.</p>
<p>The <a href="https://www.printables.com/model/257460-ender-3-s1-zero-offset-cr-touch-mount" rel="nofollow noreferrer">Ender 3 S1 Zero Offset CR Touch Mount</a> I created is available on Printables.</p>

CC BY-SA 4.0
2024-04-02T19:53:01.577Z
Thanks for posting the update! :-)
Greenonline
CC BY-SA 4.0
2024-04-02T19:30:42.133Z
2024-04-03T02:55:19.880Z
2024-04-03T02:55:19.880Z
Mikhail Grishagin
<p>I have a new Ender 3 S1 printer with CR Touch sensor (never had experience with auto levelling before) and I'm confused about how it works. Also, I updated the firmware to <a href="https://github.com/mriscoc/Ender3V2S1" rel="nofollow noreferrer">Professional Firmware</a>.</p>
<p>I ran a couple of tests with different approaches and printed a two-layer square the size of the bed.</p>
<ol>
<li>I do manual bed tramming using paper. Decent tolerance, all four corners of the test print have approximately the same height of ~0.45 mm</li>
<li>Then I run the tramming wizard, it touches four corners of the bed and says the back-left corner has an elevation of 0.15 mm and the front-right corner is -0.16 mm. I adjust the bed using screws until the wizard says all four corners are within ~0.03 mm and I print the same square again. The result is worse than paper levelling back-left corner is ~0.64 mm thickness and the front-right is ~0.45 mm. It even visually looks inconsistent</li>
<li>I tram the bed using paper again, print the square, and all is good. Then I built auto-leveling mesh, enabled it in starting G-code, and printed the square. Once again, the result is bad.</li>
</ol>
<p>How it could be that manual tramming does not correspond to the probe levelling? I don't think it's a mechanics issue, since both the nozzle and the probe are sitting rigidly on the same extruder.</p>
<p>Here is what the mesh looks like after nice and consistent manual tramming.</p>
<p><a href="https://i.sstatic.net/nDPt3.jpg" rel="nofollow noreferrer" title="Photo of the Ender 3 S1's display showing the Mesh Viewer for bed leveling"><img src="https://i.sstatic.net/nDPt3.jpg" alt="Photo of the Ender 3 S1's display showing the Mesh Viewer for bed leveling" title="Photo of the Ender 3 S1's display showing the Mesh Viewer for bed leveling" /></a></p>

<creality-ender-3><marlin><bed-leveling>
Inconsistency of manual tramming and auto tramming/auto bed levelling
Mikhail Grishagin
# Inconsistency of manual tramming and auto tramming/auto bed levelling

(Asked by: username_0 on 2023-02-22)

I have a new Ender 3 S1 printer with CR Touch sensor (never had experience with auto levelling before) and I'm confused about how it works. Also, I updated the firmware to [Professional Firmware](https://github.com/mriscoc/Ender3V2S1).

I ran a couple of tests with different approaches and printed a two-layer square the size of the bed.

1. I do manual bed tramming using paper. Decent tolerance, all four corners of the test print have approximately the same height of ~0.45 mm
2. Then I run the tramming wizard, it touches four corners of the bed and says the back-left corner has an elevation of 0.15 mm and the front-right corner is -0.16 mm. I adjust the bed using screws until the wizard says all four corners are within ~0.03 mm and I print the same square again. The result is worse than paper levelling back-left corner is ~0.64 mm thickness and the front-right is ~0.45 mm. It even visually looks inconsistent
3. I tram the bed using paper again, print the square, and all is good. Then I built auto-leveling mesh, enabled it in starting G-code, and printed the square. Once again, the result is bad.

How it could be that manual tramming does not correspond to the probe levelling? I don't think it's a mechanics issue, since both the nozzle and the probe are sitting rigidly on the same extruder.

Here is what the mesh looks like after nice and consistent manual tramming.

[![Photo of the Ender 3 S1's display showing the Mesh Viewer for bed leveling](https://i.sstatic.net/nDPt3.jpg "Photo of the Ender 3 S1's display showing the Mesh Viewer for bed leveling")](https://i.sstatic.net/nDPt3.jpg "Photo of the Ender 3 S1's display showing the Mesh Viewer for bed leveling")

**Tags:** creality-ender-3, marlin, bed-leveling


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## 1 answers

### Answer by username_0 on 2024-04-02. Score: 5 | Accepted answer

Finally, after a year I have found a solution! Posting it here in case someone else has the same problem.
Following by a suggestion from [Leveling does not work reliably on some Ender3S1 F4 printers (mechanical issue)](https://github.com/mriscoc/Ender3V2S1/issues/614) I printed a new mount for the CR Touch with a zero Y-offset, and it worked magically! I still don't know why it works, but it works.

The [Ender 3 S1 Zero Offset CR Touch Mount](https://www.printables.com/model/257460-ender-3-s1-zero-offset-cr-touch-mount) I created is available on Printables.

> **Comments:**
> **username_1**: Thanks for posting the update! :-)  

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