# M4 accurate enough for tool changes?
**URL:** https://forums.maslowcnc.com/t/m4-accurate-enough-for-tool-changes/25564
**Category:** Uncategorized
**Created:** [February 28, 2026, 4:53pm UTC](https://forums.maslowcnc.com/t/m4-accurate-enough-for-tool-changes/25564 "2026-02-28T16:53:28Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Caleb\_Yager](https://forums.maslowcnc.com/u/Caleb_Yager)
#### Post date: [February 28, 2026, 4:53pm UTC](https://forums.maslowcnc.com/t/m4-accurate-enough-for-tool-changes/25564/1 "2026-02-28T16:53:28Z")
i was wondering if i could change out tools and recut a line with say a chamfer and it be accurate to the other line?
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### Author:  [@dlang](https://forums.maslowcnc.com/u/dlang)
#### Post date: [February 28, 2026, 5:18pm UTC](https://forums.maslowcnc.com/t/m4-accurate-enough-for-tool-changes/25564/2 "2026-02-28T17:18:51Z")
Caleb Yager wrote:
> i was wondering if i could change out tools and recut a line with say a
> chamfer and it be accurate to the other line?
many people have run jobs with multiple tools. The maslow is pretty precise,
even if not accurate (i.e. very repeatable, but may not match the tape measure)
David Lang
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### Author:  [@Caleb\_Yager](https://forums.maslowcnc.com/u/Caleb_Yager)
#### Post date: [March 1, 2026, 2:26am UTC](https://forums.maslowcnc.com/t/m4-accurate-enough-for-tool-changes/25564/3 "2026-03-01T02:26:52Z")
how far off on the tape measure does it average?
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### Author:  [@dlang](https://forums.maslowcnc.com/u/dlang)
#### Post date: [March 1, 2026, 3:33am UTC](https://forums.maslowcnc.com/t/m4-accurate-enough-for-tool-changes/25564/4 "2026-03-01T03:33:16Z")
Caleb Yager wrote:
> how far off on the tape measure does it average?
we don’t have a good handle on that, too many variables and many people report
different results.
David Lang
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### Author:  [@Caleb\_Yager](https://forums.maslowcnc.com/u/Caleb_Yager)
#### Post date: [March 30, 2026, 6:04am UTC](https://forums.maslowcnc.com/t/m4-accurate-enough-for-tool-changes/25564/5 "2026-03-30T06:04:19Z")
“very repeatable, but may not match the tape measure” very accurate take, it always does the EXACT same thing, quite impressive, even the hangups on the board that make my heart jump, exact same every time, these little ones are kinda f’d but i did a larger torture test and mine is very accurate with the sizes of things, now i just gotta get all the lines to stay straight without taking chunks out of the walls and corners, but its always the same chunks so ill figure it out, it is intriging how everything is ever so slightly off the right tho
