# How to zero Z axis? **URL:** \ **Category:** Troubleshooting\ **Created:** [June 11, 2024, 11:59am UTC](https://forums.maslowcnc.com/t/how-to-zero-z-axis/21482 "2024-06-11T11:59:22Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Nashua324a](https://avatars.discourse-cdn.com/v4/letter/n/d9b06d/32.png) [@Nashua324a](https://forums.maslowcnc.com/u/Nashua324a)\ **Post date:** [June 11, 2024, 11:59am UTC](https://forums.maslowcnc.com/t/how-to-zero-z-axis/21482/1 "2024-06-11T11:59:22Z")
Hello Just got my maslow4 calibrated and ready to run, currently ran a test with no router bit just to see how it will behave. Apparently eventing went good but iam unsure on how to zero the Z axis before making a mess. Read all the instructions but can find anything about it. ---
**Author:** ![Carson\_Barry](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/carson_barry/32/23367_2.png) [@Carson\_Barry](https://forums.maslowcnc.com/u/Carson_Barry)\ **Post date:** [June 11, 2024, 1:23pm UTC](https://forums.maslowcnc.com/t/how-to-zero-z-axis/21482/2 "2024-06-11T13:23:07Z")
lower maslow completely till it bottoms out on the stepper motors and then use the Zero Z button in the setup menu this will not go well if there is a bit that will stick out past the sled if the maslow is mounted you can place a piece of wood under either half of the sled to easily remove this issue while you Zero Z make sure to set Z _Home_ as the bit resting on the surface of the material before actually cutting ---
**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\ **Post date:** [June 11, 2024, 4:21pm UTC](https://forums.maslowcnc.com/t/how-to-zero-z-axis/21482/3 "2024-06-11T16:21:17Z")
Zero Z just needs to happen once to let the machine know where it is in space vertically. After that it will remember. Home Z is done every time before you cut to let the machine know where the surface of the wood is.