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thinkyhead merged 2 commits into from
Dec 19, 2025
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Modify author and brief in M494.md #610

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334d1c8
Modify author and brief in M494.md
dbuezas Dec 6, 2025
3cbe866
Fix typo in contributor field in M494.md
dbuezas Dec 6, 2025
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9 changes: 5 additions & 4 deletions _gcode/M494.md
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Original file line number Diff line number Diff line change
@@ -1,8 +1,9 @@
---
tag: m0494
title: FT Motion Trajectory Smoothing
brief: Set / get the Fixed Time Motion parameters for Trajectory and Smoothing.
author: thinkyhead
brief: Set / get the Fixed Time Motion parameters for Trajectory generation and Smoothing.
author: dbuezas
contrig: thinkyhead

group: motion
requires: FT_MOTION
Expand Down Expand Up @@ -104,8 +105,8 @@ Particularly useful for the E axis when using linear advance, since it produces

Effects on XYZ:
* no smoothing: sharp corners, but noises and ringing
* smoothing: rounded corners, no noises and ringing
* smoothing if overdone: rounded corners, infill may not reach all corners, no noises and ringing
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@thinkyhead thinkyhead Dec 9, 2025 •
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Probably needs three bullet points here, because a little bit of smoothing probably rounds corners, even if it is hard to see. Maybe something like this…

Smoothing Effects on XYZ

  • No smoothing: Sharp corners, loud vibrations, ringing artifacts
  • Moderate smoothing: Less sharp corners, reduced audible vibrations and ringing
  • Excess smoothing: Rounded corners, poor infill-wall overlap, minimal vibrations and ringing


Effects on E:
* no smoothing: extruder skips when using linear advance
* smoothing: peaks produced by linear advance are reduced, the extruder doesn't skip and quality improves.
* smoothing: peaks produced by linear advance are reduced, the extruder doesn't skip and quality improves.