# Issue with X-Axis on Enders 3 v2 **URL:** \ **Category:** General Discussion\ **Created:** [July 25, 2022, 2:44pm UTC](https://klipper.discourse.group/t/issue-with-x-axis-on-enders-3-v2/3581 "2022-07-25T14:44:36Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![MasterBPM](https://avatars.discourse-cdn.com/v4/letter/m/aca169/32.png) [@MasterBPM](https://klipper.discourse.group/u/MasterBPM)\ **Post date:** [July 25, 2022, 2:44pm UTC](https://klipper.discourse.group/t/issue-with-x-axis-on-enders-3-v2/3581/1 "2022-07-25T14:44:36Z")
Heyho, i got a new problem that i am not able to fix myself and hope you guys have an idea or a fix. I am running Klipper on my Ender 3 v2 i nearly modified everything and it works realy good, with very smooth quality prints. If you don’t measure them 🙂 If i do the cali\_cube (just as an example) it’s exactly 20.20x20.00x20.00 ± 0.02 depenting on filament and how serious i calibrated the flow/temp etc. anyways, absolute same results on every print. But there is my Problem X is always moving too big/long. Even on non print movements it moves 10.10 instead of 10. If i measure with a caliper on every +10mm move it’s +10.10mm (even on 1mm it’s 1.01). Also if i travel 100mm in one go, it’s mostly perfect 101mm in real (± 0.02, but mostly exactly 101.00). What i tried so far: Replaced wheels on carrier. Replaced belt. Replaced Stepper motor and exchanged pulley too with a similar (20T). Tried 1.8° and 0.9° stepper. Tried SKEW Correction, i am measuring the issue i am facing in 3 diffent skew calibration objects i printed so far, but if i enter the values and let him print again, it has no impact on X as it should have (what means it’s 20.15-20.17, what is an improvement, but yeah … not what i got on all of my other printers - for sure it’s deactivated while not printing as mentioned in Klipper documentation). Even tighten or loosen the belt doesn’t realy impact the outcome, sure in both directions is a point that other problems occure like slipping belt etc., but as long as he mechanical can, it’s as mentioned above. At the moment X and Y do have the same stepper motors pulleys and belts, with any issues on Y, so i quote down my config for them below - Board is SKR E3 Mini v3: [stepper\_x] step\_pin: PB13 dir\_pin: !PB12 enable\_pin: !PB14 microsteps: 16 rotation\_distance: 40 full\_steps\_per\_rotation: 400 endstop\_pin: ^PC0 position\_endstop: -13 position\_min: -13 position\_max: 247 homing\_speed: 50 [tmc2209 stepper\_x] uart\_pin: PC11 tx\_pin: PC10 uart\_address: 0 interpolate: True run\_current: 0.950 hold\_current: 0.570 sense\_resistor: 0.110 stealthchop\_threshold: 999999 [stepper\_y] step\_pin: PB10 dir\_pin: PB2 enable\_pin: !PB11 microsteps: 16 full\_steps\_per\_rotation: 400 rotation\_distance: 40 endstop\_pin: ^PC1 position\_endstop: -32.5 position\_min: -32.5 position\_max: 222 homing\_speed: 50 [tmc2209 stepper\_y] uart\_pin: PC11 tx\_pin: PC10 uart\_address: 2 interpolate: True run\_current: 1.000 hold\_current: 0.600 sense\_resistor: 0.110 stealthchop\_threshold: 999999 Thanks and Regards, MBPM ---
**Author:** ![jules](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@jules](https://klipper.discourse.group/u/jules)\ **Post date:** [July 25, 2022, 4:19pm UTC](https://klipper.discourse.group/t/issue-with-x-axis-on-enders-3-v2/3581/2 "2022-07-25T16:19:29Z")
i believe u can correct it with the rotation distance. [https://www.klipper3d.org/Rotation\_Distance.html](https://www.klipper3d.org/Rotation_Distance.html) ```auto rotation_distance = * / ``` so if we fill this in: `new rotation distance = 40 * 10.10 / 10 = 40.4` this should be your new x rotation distance ---
**Author:** ![MasterBPM](https://avatars.discourse-cdn.com/v4/letter/m/aca169/32.png) [@MasterBPM](https://klipper.discourse.group/u/MasterBPM)\ **Post date:** [July 25, 2022, 6:11pm UTC](https://klipper.discourse.group/t/issue-with-x-axis-on-enders-3-v2/3581/3 "2022-07-25T18:11:10Z")
Hey, thanks for the reply. I am aware of it, but i lived since a few years now in the knowledge if you have to correct your steps, something is wrong 🙂 and other issues will occure, so correct me if i am wrong - but shouldn’t this be only the last possible solution for my problem ? (i don’t know it better) Thanks and Regards, MBPM ---
**Author:** ![jules](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@jules](https://klipper.discourse.group/u/jules)\ **Post date:** [July 25, 2022, 6:16pm UTC](https://klipper.discourse.group/t/issue-with-x-axis-on-enders-3-v2/3581/4 "2022-07-25T18:16:13Z")
might also be tollerance issue in the motors or name it. small tollerances will add up and boem your problem. i read somewhere that cheap chinees motors can have this issue. i wouldnt bother that much if i were u. atleast your error on position is very consistant, making it easy to adjust using rotation distance ---
**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 25, 2022, 6:30pm UTC](https://klipper.discourse.group/t/issue-with-x-axis-on-enders-3-v2/3581/5 "2022-07-25T18:30:32Z")
Actually correcting the rotation\_distance is the recommended way for Klipper to ensure accuracy. [https://www.klipper3d.org/Rotation\_Distance.html](https://www.klipper3d.org/Rotation_Distance.html) Keep in mind, that if the printer has a decent time of print in it’s life, there is wear. Mostly in the belts. Also the pulleys can be out of dimension. We are talking about a misalignment of 1%. Technically my printer also should have a rotation\_distance of 40 for X and Y, but it’s running with 39.84 to be accurate. ---
**Author:** ![MasterBPM](https://avatars.discourse-cdn.com/v4/letter/m/aca169/32.png) [@MasterBPM](https://klipper.discourse.group/u/MasterBPM)\ **Post date:** [July 26, 2022, 1:42am UTC](https://klipper.discourse.group/t/issue-with-x-axis-on-enders-3-v2/3581/6 "2022-07-26T01:42:25Z")
Hi, thanks for the replies and i guess you are right that i bother to much about that. But unfortunatelly i changed the rotation distance as mentioned by jules and the movement distance is now very inconsistant 10 ± 0.15. Edit: and once went back to previous settings it’s massivly consistant again, but still the 0.1 too much on 10mm. There is no wear on the machine, it’s a brand new Ender 3 v2 from a summer sale and i also exchanged most of the possible parts after facing the issue. Only the stepper motors where some i got laying around since a while, but StepperOnline ones (no issues with them in the last years on my other printers, as i use them in all of them - for sure not the best and pricy for what you get, but good available here and better then most nonames). But who knows maybe i tried 2 worn out stepper motors or there is something wrong with the cable, i will exchange it tomorrow with brand new ones and report it here. So far thanks for help, highly appreciated. Regards, MBPM ---
**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:** [April 15, 2024, 7:34pm UTC](https://klipper.discourse.group/t/issue-with-x-axis-on-enders-3-v2/3581/7 "2024-04-15T19:34:00Z")