# Toolsetter inaccuracy with Redline

**URL:** <https://forum.onefinitycnc.com/t/toolsetter-inaccuracy-with-redline/39553>\
**Category:** Controller (Redline) Discussion\
**Created:** [August 18, 2026, 3:51am UTC](https://forum.onefinitycnc.com/t/toolsetter-inaccuracy-with-redline/39553 "2026-08-18T03:51:41Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![UltraPeepi](https://avatars.discourse-cdn.com/v4/letter/u/fbc32d/32.png) [@UltraPeepi](https://forum.onefinitycnc.com/u/UltraPeepi)\
**Post date:** [August 18, 2026, 3:51am UTC](https://forum.onefinitycnc.com/t/toolsetter-inaccuracy-with-redline/39553/1 "2026-08-18T03:51:41Z")

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I have started creating carves with multiple tools, and relying on the Toolsetter. It has been working well, and I hope to install my ATC soon. But I ran into an issue today that concerns me. My carve included a toolpath that included text carved 0.5mm deep using a 1/16" bit (after carving with a 1/8" bit). My 1/16" tool touched off and proceeded to carve above the material. This means it got the Z offset wrong by at least 0.5mm.

Not everything I carve needs this level of accuracy in the Z axis - but some of it does. I am now concerned that I can’t rely on the toolsetter. I was really hoping to perform carves with multiple tools when I got my ATC installed. But it relies on the toolsetting to ensure the Z.

Has anyone else run into this?

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**Author:** ![SailorMike](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/sailormike/32/3290_2.png) [@SailorMike](https://forum.onefinitycnc.com/u/SailorMike)\
**Post date:** [August 18, 2026, 7:29pm UTC](https://forum.onefinitycnc.com/t/toolsetter-inaccuracy-with-redline/39553/2 "2026-08-18T19:29:57Z")

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Indeed I did. Take a look at this thread.

> [@Tool Setter Advice?](https://forum.onefinitycnc.com/t/tool-setter-advice/39479):
>
> Hello, all; I just got my new Redline Gen 2 upgrade working, and ran my first carve. It was a very simple one, as I wanted to make sure that the tool setter worked as advertised. I’ve read and watched every piece of information I can find on tool setter installation and use. I went through the setup procedure, seemed to go well. I did an XYZ probe and ran my code. First part of the carve was OK. When I got to the first manual tool change, the routine went smoothly, but when the carve resumed, …

Also, double-check to make sure that every tool has a unique ID in your CAD tool list, and that it matches the tool ID in the HMI tool list.