# Z height does not seem correct

**URL:** <https://forum.onefinitycnc.com/t/z-height-does-not-seem-correct/21152>\
**Category:** Original/PRO Series (Buildbotics) (Gen 1)\
**Created:** [June 22, 2023, 12:28am UTC](https://forum.onefinitycnc.com/t/z-height-does-not-seem-correct/21152 "2023-06-22T00:28:29Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![nolte1972](https://avatars.discourse-cdn.com/v4/letter/n/ecccb3/32.png) [@nolte1972](https://forum.onefinitycnc.com/u/nolte1972)\
**Post date:** [June 22, 2023, 12:28am UTC](https://forum.onefinitycnc.com/t/z-height-does-not-seem-correct/21152/1 "2023-06-22T00:28:29Z")

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Hello All,

I am trying to mill a one inch piece of stock. I always seem to have problems with stock great than .75. I after fight with the machine to get zero on the stock, when i try to mill a .5 pocket it nearly goes thru the whole dang thing. I already wasted much wood, any help to trouble shoot would be great.

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**Author:** ![nolte1972](https://avatars.discourse-cdn.com/v4/letter/n/ecccb3/32.png) [@nolte1972](https://forum.onefinitycnc.com/u/nolte1972)\
**Post date:** [June 22, 2023, 12:30am UTC](https://forum.onefinitycnc.com/t/z-height-does-not-seem-correct/21152/2 "2023-06-22T00:30:09Z")

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I should also add, that if i stop the project and it was zeroed, i try to re zero the Z and it says i am off, on the same piece of wood…grrr

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**Author:** ![Atroz](https://avatars.discourse-cdn.com/v4/letter/a/958977/32.png) [@Atroz](https://forum.onefinitycnc.com/u/Atroz)\
**Post date:** [June 22, 2023, 12:14pm UTC](https://forum.onefinitycnc.com/t/z-height-does-not-seem-correct/21152/3 "2023-06-22T12:14:19Z")

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First things to look at is to make sure you have it configured for the right Z-axis or the number of turns it makes may be off. After that look at electrical faults, maybe a loose connector, or EMI issues. Lots of discussion on this board around those issues.

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**Author:** ![Deepsea5](https://avatars.discourse-cdn.com/v4/letter/d/bcef8e/32.png) [@Deepsea5](https://forum.onefinitycnc.com/u/Deepsea5)\
**Post date:** [June 22, 2023, 11:52pm UTC](https://forum.onefinitycnc.com/t/z-height-does-not-seem-correct/21152/4 "2023-06-22T23:52:00Z")

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Make sure you"re setting zero on top of the material surface in the material set-up page, in V-Carve Pro and your setting the material datum point to the material surface. That will prevent gouging into your material.  
Are you using a probe for xyz ?