# Negative Z travel?

**URL:** <https://forum.onefinitycnc.com/t/negative-z-travel/11383>\
**Category:** Uncategorized\
**Created:** [February 21, 2022, 3:44am UTC](https://forum.onefinitycnc.com/t/negative-z-travel/11383 "2022-02-21T03:44:44Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Entacmaea](https://avatars.discourse-cdn.com/v4/letter/e/4af34b/32.png) [@Entacmaea](https://forum.onefinitycnc.com/u/Entacmaea)\
**Post date:** [February 21, 2022, 3:44am UTC](https://forum.onefinitycnc.com/t/negative-z-travel/11383/1 "2022-02-21T03:44:44Z")

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Hi there, I’m awaiting my journeyman, and planning my table/enclosure. I plan to build a vacuum table, and ideally would be able to CNC a hole pattern into the plywood on which the onefinity sits. So, I assume that means the Z axis would have to be able to travel below the plain of the machine - is that possible by using the lowest spindle mounting holes? I’m going to guess that it is not, but thought I would ask just to make sure : )

Thanks for helping the newbie!

Best, Peter

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**Author:** ![SkyKam](https://avatars.discourse-cdn.com/v4/letter/s/9fc29f/32.png) [@SkyKam](https://forum.onefinitycnc.com/u/SkyKam)\
**Post date:** [February 21, 2022, 6:30am UTC](https://forum.onefinitycnc.com/t/negative-z-travel/11383/2 "2022-02-21T06:30:58Z")

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You should have no problem boring holes in the table at the lowest z mount setting given the common 1/4-inch shank 2.5-inch long endmill. You’ll need about a 1.5-inch stick out from the router to go 3/4 inch deep.

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**Author:** ![GrimResistance](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/grimresistance/32/7198_2.png) [@GrimResistance](https://forum.onefinitycnc.com/u/GrimResistance)\
**Post date:** [February 21, 2022, 4:12pm UTC](https://forum.onefinitycnc.com/t/negative-z-travel/11383/3 "2022-02-21T16:12:06Z")

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I was able to mill 1/2" deep holes in my table top with the z-axis in the middle holes, just had to leave my endmill sticking out a little further than I normally would.

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**Author:** ![Entacmaea](https://avatars.discourse-cdn.com/v4/letter/e/4af34b/32.png) [@Entacmaea](https://forum.onefinitycnc.com/u/Entacmaea)\
**Post date:** [February 21, 2022, 4:24pm UTC](https://forum.onefinitycnc.com/t/negative-z-travel/11383/4 "2022-02-21T16:24:43Z")

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Ok, cool - this seems very possible then. Thanks ya’ll! This speaks to my newbie status - appreciate the help on my learning curve. Best, Peter