<p>Successfully solved the problem. Removed the Z rod from its socket, and greased up the threaded slot it goes into on the x gantry, that seemed to solve the problem.</p>

CC BY-SA 4.0
2022-03-17T13:18:11.387Z
Missing grease can lead to binding, indeed. It might be easier to remove the Z-nut and then move that to add grease, then remount it
Trish
CC BY-SA 4.0
2022-03-17T10:06:36.493Z
2022-03-17T10:06:36.493Z
Syns
<p>I have a problem with my E 3nder3 (3DTouch, Skr mini e3 v1.2, Dragon hotend with afterburner mount, other parts are original), where after using ABL, at the start of the print the Z-axis just seems to ignore where the 0 point should be and keeps trying to go down for a good second, then it just starts the print as if nothing happened.</p>
<p>The things I've tried and the observations I've made:</p>
<ul>
<li><p>After reflashing Marlin, I've tried printing without creating a mesh, and it worked as normal (using the BLTouch as a Z stop, but not making a mesh). This should eliminate the Z stop being a problem</p>
<ul>
<li>After creating the mesh even once, everything goes wrong like explained above</li>
</ul>
</li>
<li><p>I've tried leveling the bed with paper, and when using the bed visualizer in OctoPi, everything seemed pretty close to normal, so the sensor itself seems to work.</p>
</li>
<li><p>Now the weird thing was, that the day this started happening, moving the Z-axis by hand seemed to be way harder than usual, as if the rod is not lubricated, so I lubricated it with my tool grease. That didn't solve the problem. It still feels as if some of the rubber bearings are stuck on the gantry. After checking them 1 by 1, none of them seemed particularly loose or tight compared to the others.</p>
</li>
</ul>

<creality-ender-3><troubleshooting><z-axis><bltouch>
Ender 3 with BLTouch ignores Z0
Syns
# Ender 3 with BLTouch ignores Z0

(Asked by: username_0 on 2022-03-16)

I have a problem with my E 3nder3 (3DTouch, Skr mini e3 v1.2, Dragon hotend with afterburner mount, other parts are original), where after using ABL, at the start of the print the Z-axis just seems to ignore where the 0 point should be and keeps trying to go down for a good second, then it just starts the print as if nothing happened.

The things I've tried and the observations I've made:

* After reflashing Marlin, I've tried printing without creating a mesh, and it worked as normal (using the BLTouch as a Z stop, but not making a mesh). This should eliminate the Z stop being a problem

  + After creating the mesh even once, everything goes wrong like explained above
* I've tried leveling the bed with paper, and when using the bed visualizer in OctoPi, everything seemed pretty close to normal, so the sensor itself seems to work.
* Now the weird thing was, that the day this started happening, moving the Z-axis by hand seemed to be way harder than usual, as if the rod is not lubricated, so I lubricated it with my tool grease. That didn't solve the problem. It still feels as if some of the rubber bearings are stuck on the gantry. After checking them 1 by 1, none of them seemed particularly loose or tight compared to the others.

**Tags:** creality-ender-3, troubleshooting, z-axis, bltouch

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## 1 answers

### Answer by username_0 on 2022-03-17. Score: 3 | Accepted answer

Successfully solved the problem. Removed the Z rod from its socket, and greased up the threaded slot it goes into on the x gantry, that seemed to solve the problem.

> **Comments:**
> **username_1**: Missing grease can lead to binding, indeed. It might be easier to remove the Z-nut and then move that to add grease, then remount it  

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