# Z axis touch off not working

**URL:** <https://forum.arcdroidcnc.com/t/z-axis-touch-off-not-working/3281>\
**Category:** General Discussion\
**Created:** [September 15, 2023, 1:49am UTC](https://forum.arcdroidcnc.com/t/z-axis-touch-off-not-working/3281 "2023-09-15T01:49:33Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![colincb](https://avatars.discourse-cdn.com/v4/letter/c/2acd7d/32.png) [@colincb](https://forum.arcdroidcnc.com/u/colincb)\
**Post date:** [September 15, 2023, 1:49am UTC](https://forum.arcdroidcnc.com/t/z-axis-touch-off-not-working/3281/1 "2023-09-15T01:49:33Z")

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Hi All. The torch wants to drive down past the top of the cutting surface, it then retracts a bit and continues the cut path but scrapes along the surface. I can adjust the cut and pierce heights in the tuning window by 0.130" to make it work but this just does not seem right. Has anyone else experienced this?  
Thanks, Colin

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**Author:** ![Jdd](https://avatars.discourse-cdn.com/v4/letter/j/db5fbb/32.png) [@Jdd](https://forum.arcdroidcnc.com/u/Jdd)\
**Post date:** [September 15, 2023, 3:17am UTC](https://forum.arcdroidcnc.com/t/z-axis-touch-off-not-working/3281/2 "2023-09-15T03:17:11Z")

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Mine is set off 2.00 to 2.5 mm after a set up my 3 point level on 16 gauge steel I get almost 99% clean cuts. You will have to adjust you’re. Do you have your torch cable supported?

 ![thumbnail](https://us1.discourse-cdn.com/flex016/uploads/arcdroidcnc/original/1X/d4a451ced680904381acff602760b04a0037df3f.jpeg)  
Your cable might be dragging you down. [False Probe - YouTube](https://www.youtube.com/shorts/dyW6NQhQyJI) also [Step 1.5 Z Axis Calibration - YouTube](https://www.youtube.com/watch?v=udinId0vk64). Don’t worry everybody has had the same problems .

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**Author:** ![Joatmon](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.arcdroidcnc.com/joatmon/32/1201_2.png) [@Joatmon](https://forum.arcdroidcnc.com/u/Joatmon)\
**Post date:** [September 15, 2023, 5:24am UTC](https://forum.arcdroidcnc.com/t/z-axis-touch-off-not-working/3281/3 "2023-09-15T05:24:39Z")

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You may be inserting SAE numbers and in millimeter make sure the tune is not in mm. Look at the top it will tell you after you click tune .

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**Author:** ![colincb](https://avatars.discourse-cdn.com/v4/letter/c/2acd7d/32.png) [@colincb](https://forum.arcdroidcnc.com/u/colincb)\
**Post date:** [September 15, 2023, 9:57am UTC](https://forum.arcdroidcnc.com/t/z-axis-touch-off-not-working/3281/4 "2023-09-15T09:57:50Z")

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Thanks Jdd. My cable is pretty well supported and does not seem to be dragging the torch down. I’ve checked the clearance with a thickness block all across the table and it doesn’t change. Glad to hear that I’m not the only one with this problem.