# Keeping zero position **URL:** \ **Category:** Original/PRO Series (Buildbotics) (Gen 1)\ **Created:** [July 13, 2022, 1:47pm UTC](https://forum.onefinitycnc.com/t/keeping-zero-position/14115 "2022-07-13T13:47:13Z")\ **Posts on this page:** 1\ **Showing post:** 50
**Author:** ![349iq2345](https://avatars.discourse-cdn.com/v4/letter/3/bb73d2/32.png) [@349iq2345](https://forum.onefinitycnc.com/u/349iq2345)\ **Post date:** [March 13, 2023, 8:20pm UTC](https://forum.onefinitycnc.com/t/keeping-zero-position/14115/50 "2023-03-13T20:20:50Z")
Hey JDog, beautiful fixtures / jigs! I think reducing the use of the touch probe to only once per bootup period because you have a fixed jig is something that really saves time. I think when using this, it is important that you can ensure accurate positioning and clamping of the workpiece at the jig, I mean the faces would need to be perpendicular and first of all perfectly parallel to machine axes. As [Dr-Al mentioned the other day](https://forum.onefinitycnc.com/t/grid-lines-on-spoil-board/3213/25), when you mill the faces of your angular jig _with the machine itself_, the parallelity to the machine axis is absolutely perfect and reliable. Another way to achieve positioning repeatability is to [retrofit inductive proximity sensors](https://forum.onefinitycnc.com/t/controller-software-tool-change-location-0-0-g54-g55-g56/10052/14) to decommission the stock [stall homing](https://forum.onefinitycnc.com/t/how-common-are-missed-steps/18352/8). This brings perfect positioning repeatability. With inductive limit sensors, you can rely on the absolute _machine coordinates_, which means if you want to move to a specific point, you could do that with motion commands and a coordinate, and it would accurately be the same position everytime, even after shutdown or power outage. A positive side effect of limit sensors is that you can [square the machine](https://forum.onefinitycnc.com/t/what-do-i-do-first/18349/6) **without** unbolting and repositioning main parts of the machine. You can simply move the sensors a bit. Elite Series with Masso G3 Touch use a comparable way to achieve its auto-squaring. --- _[View the full topic](https://forum.onefinitycnc.com/t/keeping-zero-position/14115)._