# Router dipping below z-axis and cutting through project

**URL:** <https://forum.sienci.com/t/router-dipping-below-z-axis-and-cutting-through-project/11121>\
**Category:** Fusion 360\
**Created:** [February 5, 2024, 1:11am UTC](https://forum.sienci.com/t/router-dipping-below-z-axis-and-cutting-through-project/11121 "2024-02-05T01:11:03Z")\
**Posts on this page:** 1\
**Showing post:** 22

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**Author:** ![NeilFerreri](https://forum.sienci.com/user_avatar/forum.sienci.com/neilferreri/32/1959_2.png) [@NeilFerreri](https://forum.sienci.com/u/NeilFerreri)\
**Post date:** [February 10, 2024, 7:32pm UTC](https://forum.sienci.com/t/router-dipping-below-z-axis-and-cutting-through-project/11121/22 "2024-02-10T19:32:37Z")

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> [@pawiseman1](#):
>
> Not sure if I answered your question or not?

Yes

> [@pawiseman1](#):
>
> I thought it was grbl

There is a generic grbl post processor.

With that post selected, your post process window looks something like this?

 ![image](https://forum.sienci.com/uploads/default/original/2X/a/aa868e3ca9be3b558974e01d32660d51c898c027.png)  
You want to change the setting for “Safe Retracts” to “Clearance Height”.  
 ![image](https://forum.sienci.com/uploads/default/original/2X/6/63d83ca05ea7245e6ec09e35d3e17b87077bdff6.png)

You can also change line 49 in the current version of the PP from  
`value: "G28",`  
to  
`value: "clearanceHeight",`

That way, you won’t have to mess with it again.

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