# Z axis only lowers halfway

**URL:** <https://forum.onefinitycnc.com/t/z-axis-only-lowers-halfway/19115>\
**Category:** Uncategorized\
**Created:** [March 1, 2023, 12:50am UTC](https://forum.onefinitycnc.com/t/z-axis-only-lowers-halfway/19115 "2023-03-01T00:50:37Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Jazzybluz14](https://avatars.discourse-cdn.com/v4/letter/j/7bcc69/32.png) [@Jazzybluz14](https://forum.onefinitycnc.com/u/Jazzybluz14)\
**Post date:** [March 1, 2023, 12:50am UTC](https://forum.onefinitycnc.com/t/z-axis-only-lowers-halfway/19115/1 "2023-03-01T00:50:37Z")

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Hi all  
I am fairly new at this but have had my OF for about a year now. Everything was great until I upgraded the firmware from 1.09 to 1.2.1. Everything is good but after the upgrade the Z axis only goes halfway down. It doesnt hit the wasteboard. I have tried re-installing the firmware, cleaning the rails and I am running out of ideas. Any help would be appreciated.  
Photos show the minimum height and Z position is -6.299.

 ![image](https://us1.discourse-cdn.com/flex022/uploads/onefinitycnc/original/3X/0/a/0aa49a1f8b813d4c35dc54480b6e2078d0927a97.jpeg)

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**Author:** ![MiBer5](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/miber5/32/35829_2.png) [@MiBer5](https://forum.onefinitycnc.com/u/MiBer5)\
**Post date:** [March 1, 2023, 11:34am UTC](https://forum.onefinitycnc.com/t/z-axis-only-lowers-halfway/19115/2 "2023-03-01T11:34:11Z")

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Have you “re-homed” the system since the install?

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<div class="post-metadata">

**Author:** ![Jazzybluz14](https://avatars.discourse-cdn.com/v4/letter/j/7bcc69/32.png) [@Jazzybluz14](https://forum.onefinitycnc.com/u/Jazzybluz14)\
**Post date:** [March 1, 2023, 1:55pm UTC](https://forum.onefinitycnc.com/t/z-axis-only-lowers-halfway/19115/3 "2023-03-01T13:55:24Z")

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Unfortunately yes quite a few times. It seems to home with no troubles but after it is completed I can’t get the z axis to come down far enough to start my next job.

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**Author:** ![MiBer5](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/miber5/32/35829_2.png) [@MiBer5](https://forum.onefinitycnc.com/u/MiBer5)\
**Post date:** [March 3, 2023, 9:28am UTC](https://forum.onefinitycnc.com/t/z-axis-only-lowers-halfway/19115/4 "2023-03-03T09:28:42Z")

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Ouch. Since it occurred after the firmware update. Have you tried reflashing the firmware? Very carefully following all the steps outlined in the process? It’s not a terribly difficult process.

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**Author:** ![Wood4evr](https://avatars.discourse-cdn.com/v4/letter/w/53a042/32.png) [@Wood4evr](https://forum.onefinitycnc.com/u/Wood4evr)\
**Post date:** [March 5, 2024, 9:59am UTC](https://forum.onefinitycnc.com/t/z-axis-only-lowers-halfway/19115/5 "2024-03-05T09:59:32Z")

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I have had the same problem…The only solution I can find is after homing the machine, I push the setting icon and unhome the z axis and it returns to normal operation. I would love to find a fix for this.