# Probe z axis issue **URL:** \ **Category:** General Discussion\ **Created:** [July 19, 2023, 1:07pm UTC](https://klipper.discourse.group/t/probe-z-axis-issue/9537 "2023-07-19T13:07:29Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![pave3p](https://avatars.discourse-cdn.com/v4/letter/p/f4b2a3/32.png) [@pave3p](https://klipper.discourse.group/u/pave3p)\ **Post date:** [July 19, 2023, 1:07pm UTC](https://klipper.discourse.group/t/probe-z-axis-issue/9537/1 "2023-07-19T13:07:29Z")
Printer Model: ender 3 pro MCU / Printerboard: skr 1.4 turbo, tmc2209 [klippy (1).log](https://klipper.discourse.group/uploads/short-url/xdf3qhgSchy4Y30TS4o4G30QdY2.log) (1.1 MB) Hello i am having an issue with my z axis probe. I try to make a bed mesh and after i home all axis i go to tune tab in fluidd and start calibrate. the printhead goes to first point and lowers z until triggering the probe as it should normally do. Then normally it should probe the same point once more before moving to the next one by raising Z then lowering the probe’s pin and lowering Z again. I see that Z doesnt move up enough for the probe to be able to extend fully so even if it goes down the probe is still read as triggered. Then the probing fails and i get a message that it wasnt able to be deployed. Is there any setting to allow me to adjust how much the printhead moves up between probing? Thanks ---
**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:** [July 19, 2023, 1:17pm UTC](https://klipper.discourse.group/t/probe-z-axis-issue/9537/2 "2023-07-19T13:17:44Z")
You may set ```auto #sample_retract_dist: 2.0 # The distance (in mm) to lift the toolhead between each sample (if # sampling more than once). The default is 2mm. ``` with a value larger than 2 in `[bltouch]` * * * BTW: Nice neat config. A joy to see. ---
**Author:** ![pave3p](https://avatars.discourse-cdn.com/v4/letter/p/f4b2a3/32.png) [@pave3p](https://klipper.discourse.group/u/pave3p)\ **Post date:** [July 19, 2023, 1:19pm UTC](https://klipper.discourse.group/t/probe-z-axis-issue/9537/3 "2023-07-19T13:19:44Z")
> [@EddyMI3D](#): > > `sample_retract_dist: 2.0` since my z\_offset is 15 mm should i go higher than that? > [@EddyMI3D](#): > > BTW: Nice neat config. A joy to see. thanks! ---
**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:** [July 19, 2023, 1:27pm UTC](https://klipper.discourse.group/t/probe-z-axis-issue/9537/4 "2023-07-19T13:27:25Z")
3 or 4 mm should be enough. Just as much the BLtouch can deploy again plus one mm more. ---
**Author:** ![pave3p](https://avatars.discourse-cdn.com/v4/letter/p/f4b2a3/32.png) [@pave3p](https://klipper.discourse.group/u/pave3p)\ **Post date:** [July 19, 2023, 1:31pm UTC](https://klipper.discourse.group/t/probe-z-axis-issue/9537/5 "2023-07-19T13:31:18Z")
ok now it raises enough between 2 probings at the same point but after probing twice on one point it doesnt raise enough when going to next one for the first probing. any ideas? ---
**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:** [July 19, 2023, 1:40pm UTC](https://klipper.discourse.group/t/probe-z-axis-issue/9537/6 "2023-07-19T13:40:14Z")
You may then increase `horizontal_move_z` in ```auto [bed_mesh] speed = 100 horizontal_move_z = 5.0 # <------ mesh_min = 0,0 mesh_max = 235,235 probe_count = 3 fade_start = 1.0 fade_end = 10.0 ``` ---
**Author:** ![pave3p](https://avatars.discourse-cdn.com/v4/letter/p/f4b2a3/32.png) [@pave3p](https://klipper.discourse.group/u/pave3p)\ **Post date:** [July 19, 2023, 1:46pm UTC](https://klipper.discourse.group/t/probe-z-axis-issue/9537/7 "2023-07-19T13:46:30Z")
It works like a charm now. Thanks for the help ---
**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 13, 2024, 1:06pm UTC](https://klipper.discourse.group/t/probe-z-axis-issue/9537/8 "2024-05-13T13:06:16Z")