# Machine looses zero position often **URL:** \ **Category:** General Chat\ **Created:** [February 14, 2024, 3:20am UTC](https://forum.avidcnc.com/t/machine-looses-zero-position-often/2954 "2024-02-14T03:20:24Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Fcfnc](https://avatars.discourse-cdn.com/v4/letter/f/96bed5/32.png) [@Fcfnc](https://forum.avidcnc.com/u/Fcfnc)\ **Post date:** [February 14, 2024, 3:20am UTC](https://forum.avidcnc.com/t/machine-looses-zero-position-often/2954/1 "2024-02-14T03:20:24Z")
I use my machine to cut furniture parts. I secure a dimensioned board to the SB, cut the part, clean up and do it again. Once a board is secured to the SB, I hit go to work zero and it moves there to start the next part. I do this for at least a couple of hours each day. At least once a day the machine looses where it’s zero point is. It will work fine for a while, then just one time it will go somewhere else when I hit go to work zero. I have to home, then start over again. I am wondering if my using the keyboard to move around has anything to do with this? When a part is finished I use the keyboard to move away while I remove the part, then I use the keyboard to move the dust boot around to clean up the wood dust, move it away again, secure a new board, then hit go to work zero to start again. Is me using the keyboard to move the gantry around a lot like this causing me to loose the zero point? Is this possible? Thanks! ---
**Author:** ![Stephen](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.avidcnc.com/stephen/32/2569_2.png) [@Stephen](https://forum.avidcnc.com/u/Stephen)\ **Post date:** [February 14, 2024, 12:23pm UTC](https://forum.avidcnc.com/t/machine-looses-zero-position-often/2954/2 "2024-02-14T12:23:52Z")
> [@Fcfnc](#): > > I am wondering if my using the keyboard to move around has anything to do with this? Yes. You can probably force it to happen by quickly toggling arrows or pressing more than one arrow at a time. It might work just fine if you briefly pause between direction changes. I don’t want to risk it, so I gave up keyboard jog. See this whole thread: > [@Y-axis home occasionally resets when jogging](https://forum.avidcnc.com/t/y-axis-home-occasionally-resets-when-jogging/1788): > > Hi all! I’ve had this happen several times. I’ll start jogging the machine with the keyboard, or be in the middle of jogging with the keyboard (bluetooth keyboard), and all of a sudden the y has lost it’s position. Here’s a screen shot of Mach 4 when it happens. The real position is in the front, but the machine suddenly thought it was at the max y, as shown in the DRO (set to machine coordinates). What in the world could cause this to happen? It has me really worried. ---
**Author:** ![corbin](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.avidcnc.com/corbin/32/2800_2.png) [@corbin](https://forum.avidcnc.com/u/corbin)\ **Post date:** [February 14, 2024, 2:06pm UTC](https://forum.avidcnc.com/t/machine-looses-zero-position-often/2954/3 "2024-02-14T14:06:12Z")
Yeah, definitely a Mach 4 bug. I still jog with the keyboard, but I’m more careful about switching directions and mashing buttons, and I stopped using a bluetooth keyboard due to slight lag. I also got an MPG / pendant, and use that for a lot of jogging. ---
**Author:** ![Fcfnc](https://avatars.discourse-cdn.com/v4/letter/f/96bed5/32.png) [@Fcfnc](https://forum.avidcnc.com/u/Fcfnc)\ **Post date:** [February 14, 2024, 3:41pm UTC](https://forum.avidcnc.com/t/machine-looses-zero-position-often/2954/4 "2024-02-14T15:41:47Z")
Good to know this! Thanks guys! ---
**Author:** ![Gasawdust](https://avatars.discourse-cdn.com/v4/letter/g/35a633/32.png) [@Gasawdust](https://forum.avidcnc.com/u/Gasawdust)\ **Post date:** [February 15, 2024, 2:08pm UTC](https://forum.avidcnc.com/t/machine-looses-zero-position-often/2954/5 "2024-02-15T14:08:37Z")
I recently had this issue also. Turned out I had an improperly tensioned belt. Easy to check and re- tension.