# Can't make Z\_OFFSET move the nozzle up and down **URL:** \ **Category:** General Discussion\ **Created:** [February 12, 2023, 1:17pm UTC](https://klipper.discourse.group/t/cant-make-z-offset-move-the-nozzle-up-and-down/6611 "2023-02-12T13:17:32Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![airpenguin](https://avatars.discourse-cdn.com/v4/letter/a/258eb7/32.png) [@airpenguin](https://klipper.discourse.group/u/airpenguin)\ **Post date:** [February 12, 2023, 1:17pm UTC](https://klipper.discourse.group/t/cant-make-z-offset-move-the-nozzle-up-and-down/6611/1 "2023-02-12T13:17:32Z")
### Basic Information: Printer Model: self-built Delta MCU / Printerboard: RAMPS 1.4 `klippy.log` [klippy(2).log](https://klipper.discourse.group/uploads/short-url/1gFrYO0aRCe5be4EmqKdIUlN4ar.log) (4.4 MB) I got some questions need someone to help me ![1676207573230](https://global.discourse-cdn.com/free1/uploads/klipper/original/2X/c/ce553f53541e9b4234fbdd604a63bf0dafefc26a.jpeg) My z\_offset=X no matter what number of the X is, it doesn’t effect but use the probe command, I can put the correct value after the Z\_offset result and save the value but it doesn’t develop nozzle while printing But.I use one of the macro (START\_PRINT) , change the “SET\_GCODE\_OFFSET Z= (correct value)” to run the macro “START\_PRINT”, the nozzle develops correctly, but I have to change the (correct value) time by time manually when I use the probe command I hope to use a way like “SET\_GCODE\_OFFSET=probe.z\_offset” to update the value of the Z\_offset. I know that the coding way of “probe.z\_offset” is not correct please tell me how to quote the Z\_OFFSET pf the [probe] and give me some MACRO examples ---
**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:** [February 12, 2023, 2:18pm UTC](https://klipper.discourse.group/t/cant-make-z-offset-move-the-nozzle-up-and-down/6611/2 "2023-02-12T14:18:24Z")
I’m not sure I understand. The probe’s z-offset is tuned once and then usually left like it is. It is always active and determines the bed’s Z origin after homing. If you need further correction one would use `SET_GCODE_OFFSET` ---
**Author:** ![mykepredko](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/mykepredko/32/2085_2.png) [@mykepredko](https://klipper.discourse.group/u/mykepredko)\ **Post date:** [February 12, 2023, 3:39pm UTC](https://klipper.discourse.group/t/cant-make-z-offset-move-the-nozzle-up-and-down/6611/3 "2023-02-12T15:39:56Z")
Could you explain how you implemented your printer and the three Z axis joints (as it’s a delta printer)? I had a similar problem on one of my printers until I put in anti-backlash nuts on the Z axis lead screws - there was enough resistance that gravity wasn’t enough to keep the Z axis nuts at the bottom of the threads. ---
**Author:** ![airpenguin](https://avatars.discourse-cdn.com/v4/letter/a/258eb7/32.png) [@airpenguin](https://klipper.discourse.group/u/airpenguin)\ **Post date:** [February 13, 2023, 6:06am UTC](https://klipper.discourse.group/t/cant-make-z-offset-move-the-nozzle-up-and-down/6611/5 "2023-02-13T06:06:38Z")
[![](https://global.discourse-cdn.com/free1/uploads/klipper/original/2X/b/bf049eaa8797254ddb18c7a7086320ceb48bca2f.png)](https://klipper.discourse.group/u/airpenguin) [airpenguin](https://klipper.discourse.group/u/airpenguin) [1m](https://klipper.discourse.group/t/cant-make-z-offset-move-the-nozzle-up-and-down/6611/4) “z\_offset:X” X will be updated but this updated value is useless I used to fix the value to 10 but the Z was not raised So I can only fix it with SET\_GCODE\_OFFSET ---
**Author:** ![airpenguin](https://avatars.discourse-cdn.com/v4/letter/a/258eb7/32.png) [@airpenguin](https://klipper.discourse.group/u/airpenguin)\ **Post date:** [February 13, 2023, 6:07am UTC](https://klipper.discourse.group/t/cant-make-z-offset-move-the-nozzle-up-and-down/6611/6 "2023-02-13T06:07:44Z")
![IMG20230213114645](https://global.discourse-cdn.com/free1/uploads/klipper/original/2X/7/79edc0d7d9e95a131f7382e7592b0883f8329f3f.jpeg) This is the structure ---
**Author:** ![mykepredko](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/mykepredko/32/2085_2.png) [@mykepredko](https://klipper.discourse.group/u/mykepredko)\ **Post date:** [February 13, 2023, 6:21am UTC](https://klipper.discourse.group/t/cant-make-z-offset-move-the-nozzle-up-and-down/6611/7 "2023-02-13T06:21:55Z")
Sorry, what do you have driving your Z axes? I can’t tell in the picture. ---
**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:** [February 13, 2023, 7:53am UTC](https://klipper.discourse.group/t/cant-make-z-offset-move-the-nozzle-up-and-down/6611/8 "2023-02-13T07:53:09Z")
Not sure if you are on the right path here (also I’m not a delta expert) I would assume that your Delta Calibration is off. Check out some videos (e.g. [Large Delta 3D Printer - How to calibrate a delta 3d printer using Klipper! - YouTube](https://www.youtube.com/watch?v=Uty1a64JwDQ)) and the documentation [Delta calibration - Klipper documentation](https://www.klipper3d.org/Delta_Calibrate.html) how to do it. ---
**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:** [October 20, 2024, 10:45am UTC](https://klipper.discourse.group/t/cant-make-z-offset-move-the-nozzle-up-and-down/6611/9 "2024-10-20T10:45:12Z")