# Z probe wrong height **URL:** \ **Category:** Troubleshooting\ **Created:** [April 16, 2017, 12:46am UTC](https://community.inventables.com/t/z-probe-wrong-height/36568 "2017-04-16T00:46:47Z")\ **Posts on this page:** 18\ **Page:** 1
**Author:** ![BrentBousquet](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/brentbousquet/32/67381_2.png) [@BrentBousquet](https://community.inventables.com/u/BrentBousquet)\ **Post date:** [April 16, 2017, 12:46am UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/1 "2017-04-16T00:46:47Z")
I just got around to using the z probe I got with my upgrade but when I set the height it starts cutting way too high. Is there a reason it raises up so high after I use the z probe. It works fine if I set z manually. ---
**Author:** ![JoeSimone](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/joesimone/32/68782_2.png) [@JoeSimone](https://community.inventables.com/u/JoeSimone)\ **Post date:** [April 16, 2017, 12:49am UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/2 "2017-04-16T00:49:51Z")
You have the probe on top of what your cutting and keep the same bit in after you set z? ---
**Author:** ![ErikJenkins](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/erikjenkins/32/84368_2.png) [@ErikJenkins](https://community.inventables.com/u/ErikJenkins)\ **Post date:** [April 16, 2017, 12:51am UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/3 "2017-04-16T00:51:29Z")
Did you set the height of the Z-probe in setup? ---
**Author:** ![RonSabourin](https://avatars.discourse-cdn.com/v4/letter/r/a88e57/32.png) [@RonSabourin](https://community.inventables.com/u/RonSabourin)\ **Post date:** [April 16, 2017, 1:25am UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/4 "2017-04-16T01:25:59Z")
> [@BrentBousquet](#): > > s there a reason it raises up so high after I use the z probe. > [@ErikJenkins](#): > > Did you set the height of the Z-probe in setup? Hi Brent… likely what Erik mentioned… check this out … > [@Z probe issues](https://community.inventables.com/t/z-probe-issues/29700): > > Tried using my z probe for the first time today and was pretty excited to do so since I have a 2-stage carve. went thru all the set-up steps for my project in “carve” and when it asked if I was using the z probe I went thru those steps. when the carve started, z moved down a bit x, y moved into position and then z went down and started carving air… So at this point I figured I needed to set the unit up before a carve so I went into “set-up your machine” and went thru all the steps there, then w… ---
**Author:** ![BrianAustin](https://avatars.discourse-cdn.com/v4/letter/b/e9c0ed/32.png) [@BrianAustin](https://community.inventables.com/u/BrianAustin)\ **Post date:** [May 12, 2017, 3:19pm UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/5 "2017-05-12T15:19:32Z")
So I just had the same issue. Ran through the Z-probe set up, started the cut and the first pass was cutting air. I killed the cut and tried setting the Z-axis zero manually, resent the cut and it still cut air. I will mentioned I didn’t have this issue before the most recent driver update. Accepting ideas. ---
**Author:** ![BrianAustin](https://avatars.discourse-cdn.com/v4/letter/b/e9c0ed/32.png) [@BrianAustin](https://community.inventables.com/u/BrianAustin)\ **Post date:** [May 12, 2017, 3:46pm UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/8 "2017-05-12T15:46:53Z")
By touch plate you are talking about the brass puck? I don’t remember doing that when I got my machine back in Dec, and it has work just fine until today. Is this something that changed with the driver update? ---
**Author:** ![BrianAustin](https://avatars.discourse-cdn.com/v4/letter/b/e9c0ed/32.png) [@BrianAustin](https://community.inventables.com/u/BrianAustin)\ **Post date:** [May 12, 2017, 3:49pm UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/9 "2017-05-12T15:49:17Z")
[http://easel.inventables.com/projects/wlvTFudxcJNgAHp9zoZjWg](http://easel.inventables.com/projects/wlvTFudxcJNgAHp9zoZjWg) ---
**Author:** ![BrianAustin](https://avatars.discourse-cdn.com/v4/letter/b/e9c0ed/32.png) [@BrianAustin](https://community.inventables.com/u/BrianAustin)\ **Post date:** [May 12, 2017, 3:55pm UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/11 "2017-05-12T15:55:45Z")
I guess I should have clarified I am a beginner and this is my first CNC. ---
**Author:** ![BrianAustin](https://avatars.discourse-cdn.com/v4/letter/b/e9c0ed/32.png) [@BrianAustin](https://community.inventables.com/u/BrianAustin)\ **Post date:** [May 12, 2017, 4:25pm UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/13 "2017-05-12T16:25:53Z")
So which set of setting do you want me to post? The ones listed under settings at the very bottom, that look like this $0=10 (step pulse, usec) $1=255 (step idle delay, msec) $2=0 (step port invert mask:00000000) $3=4 (dir port invert mask:00000100) $4=0 (step enable invert, bool) $5=0 (limit pins invert, bool) $6=0 (probe pin invert, bool) $10=115 (status report mask:01110011) $11=0.020 (junction deviation, mm) $12=0.002 (arc tolerance, mm) $13=0 (report inches, bool) $20=0 (soft limits, bool) $21=0 (hard limits, bool) $22=1 (homing cycle, bool) $23=3 (homing dir invert mask:00000011) $24=25.000 (homing feed, mm/min) $25=750.000 (homing seek, mm/min) $26=250 (homing debounce, msec) $27=1.000 (homing pull-off, mm) $30=1. (rpm max) $31=0. (rpm min) $100=40.000 (x, step/mm) $101=40.000 (y, step/mm) $102=188.976 (z, step/mm) $110=8000.000 (x max rate, mm/min) $111=8000.000 (y max rate, mm/min) $112=500.000 (z max rate, mm/min) $120=500.000 (x accel, mm/sec^2) $121=500.000 (y accel, mm/sec^2) $122=50.000 (z accel, mm/sec^2) $130=540.000 (x max travel, mm) $131=540.000 (y max travel, mm) $132=100.000 (z max travel, mm) ---
**Author:** ![BrianAustin](https://avatars.discourse-cdn.com/v4/letter/b/e9c0ed/32.png) [@BrianAustin](https://community.inventables.com/u/BrianAustin)\ **Post date:** [May 12, 2017, 4:32pm UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/14 "2017-05-12T16:32:48Z")
Checked the advance settings for the touch plate. Setting was set to .59, measure my plate at .589in. The gap i was experiencing during the cut appeared to be greater than that difference. ---
**Author:** ![BrianAustin](https://avatars.discourse-cdn.com/v4/letter/b/e9c0ed/32.png) [@BrianAustin](https://community.inventables.com/u/BrianAustin)\ **Post date:** [May 12, 2017, 5:25pm UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/16 "2017-05-12T17:25:20Z")
Yep, only the 750mm (if only I had a bigger shop I would have picked up the 1000mm) No, I will try a reboot next. I was playing around and noticed that when I zeroed out my z-axis (-0.002) and then sent the cut the z-axis would start is first pass at -0.508. and then step down from there. ---
**Author:** ![BrianAustin](https://avatars.discourse-cdn.com/v4/letter/b/e9c0ed/32.png) [@BrianAustin](https://community.inventables.com/u/BrianAustin)\ **Post date:** [May 12, 2017, 5:41pm UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/18 "2017-05-12T17:41:24Z")
Disconnected power from everything completely, rebooted the computer. Same thing as listed above regardless if i use the touch plate or set the Z manual. Starts first pass at -0.507 ---
**Author:** ![DavidAnnetta](https://avatars.discourse-cdn.com/v4/letter/d/e9c0ed/32.png) [@DavidAnnetta](https://community.inventables.com/u/DavidAnnetta)\ **Post date:** [May 12, 2017, 5:49pm UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/19 "2017-05-12T17:49:56Z")
After you probe z, try sending it to zero and see if it’s correct. ---
**Author:** ![BrianAustin](https://avatars.discourse-cdn.com/v4/letter/b/e9c0ed/32.png) [@BrianAustin](https://community.inventables.com/u/BrianAustin)\ **Post date:** [May 12, 2017, 6:05pm UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/20 "2017-05-12T18:05:30Z")
What do you mean send it to zero? Is there a way to do this in Easel without being in a project? ---
**Author:** ![BrianAustin](https://avatars.discourse-cdn.com/v4/letter/b/e9c0ed/32.png) [@BrianAustin](https://community.inventables.com/u/BrianAustin)\ **Post date:** [May 12, 2017, 6:35pm UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/24 "2017-05-12T18:35:06Z")
Well…sorry for the headache. I appreciated all the help though. Guess I will either have to get used to the variance or consider leveling my waste board. ---
**Author:** ![BrianAustin](https://avatars.discourse-cdn.com/v4/letter/b/e9c0ed/32.png) [@BrianAustin](https://community.inventables.com/u/BrianAustin)\ **Post date:** [May 12, 2017, 7:13pm UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/26 "2017-05-12T19:13:01Z")
I assume there is a post on here that details that, right? ---
**Author:** ![BrianAustin](https://avatars.discourse-cdn.com/v4/letter/b/e9c0ed/32.png) [@BrianAustin](https://community.inventables.com/u/BrianAustin)\ **Post date:** [May 13, 2017, 1:54pm UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/29 "2017-05-13T13:54:02Z")
Not yet. Honestly that is the first time I have gone into the grbl. I know who to contact now when I decide to make the switch. ---
**Author:** ![JaredGray](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@JaredGray](https://community.inventables.com/u/JaredGray)\ **Post date:** [February 18, 2018, 8:44pm UTC](https://community.inventables.com/t/z-probe-wrong-height/36568/30 "2018-02-18T20:44:30Z")
Hi there, just wanted to add that I had a similar issue in effect. I checked everything from this thread with no avail. The issue I was having was my poor understanding of registration points in Fusion 360. I had the z registered on the bottom of the work where it should have been at the top of the work. This article led me to look at the nc file where I noticed all the z calls were positive. When you think about it, if you register Z0 at the top of the work using a probe or manually and your program is all positive z heights it makes perfect sense why you’d be cutting through thin air. Hope this helps someone.