# Z\_TILT\_ADJUST doesn't appear to use the probe x,y offsets

**URL:** <https://klipper.discourse.group/t/z-tilt-adjust-doesnt-appear-to-use-the-probe-x-y-offsets/6215>\
**Category:** General Discussion\
**Created:** [January 26, 2023, 4:13pm UTC](https://klipper.discourse.group/t/z-tilt-adjust-doesnt-appear-to-use-the-probe-x-y-offsets/6215 "2023-01-26T16:13:19Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![ianf](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/ianf/32/13900_2.png) [@ianf](https://klipper.discourse.group/u/ianf)\
**Post date:** [January 26, 2023, 4:13pm UTC](https://klipper.discourse.group/t/z-tilt-adjust-doesnt-appear-to-use-the-probe-x-y-offsets/6215/1 "2023-01-26T16:13:19Z")

</div>

This printer has a 400x400 bed and the Z and Z1 lead screws are 68mm off the edge of the bed on the X and centered on the Y axis.

When performing Z\_TILT\_ADJUST, Klipper uses nozzle-coordinates and not probe-coordinates resulting in the nozzle being moved to the configured points 100,200 and 300,200 but actually probing the point 64.5,190 and 264.5,190. Is this expected behavior?

Interestingly, BED\_MESH\_CALIBRATE does use the probe offsets when generating the mesh.

My probe and tilt config below:

[bltouch]  
sensor\_pin: PB2  
control\_pin: PB1  
samples: 3  
samples\_result: median  
speed: 2  
x\_offset: -38.5  
y\_offset: -10.0  
z\_offset: 0

[z\_tilt]  
z\_positions:  
-89,200  
489,200  
points:  
100,200  
300,200  
speed: 100  
horizontal\_move\_z: 10  
retries: 20  
retry\_tolerance: 0.01

---

<div class="post-metadata">

**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\
**Post date:** [January 26, 2023, 4:18pm UTC](https://klipper.discourse.group/t/z-tilt-adjust-doesnt-appear-to-use-the-probe-x-y-offsets/6215/2 "2023-01-26T16:18:58Z")

</div>

[https://www.klipper3d.org/Config\_Reference.html#z\_tilt](https://www.klipper3d.org/Config_Reference.html#z_tilt)

---

<div class="post-metadata">

**Author:** ![ianf](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/ianf/32/13900_2.png) [@ianf](https://klipper.discourse.group/u/ianf)\
**Post date:** [January 26, 2023, 4:39pm UTC](https://klipper.discourse.group/t/z-tilt-adjust-doesnt-appear-to-use-the-probe-x-y-offsets/6215/3 "2023-01-26T16:39:44Z")

</div>

Thanks, I had read that multiple times but somehow thought that Klipper calculated the tilt correction based on the probed line or plane through z\_positions and points. When the probed points aren’t the points used in the calculation it would make convergence slow. I’ll just set it up to probe the line between the screws as far apart as possible and leave it at that.

---

<div class="post-metadata">

**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\
**Post date:** [May 10, 2024, 8:56pm UTC](https://klipper.discourse.group/t/z-tilt-adjust-doesnt-appear-to-use-the-probe-x-y-offsets/6215/4 "2024-05-10T20:56:12Z")

</div>