Changing print speed for a specific filament type - PrusaSlicer

RE: Changing print speed for a specific filament type

Bertrand — Sat, 09 May 2026 09:52:33 +0000

Hello,

to test it out, I added the M220 G-code to the profile for the TPU filament I’m using (Recreus Filaflex 95A), and it works perfectly. With M220 S75 as the start G-code and M220 S100 as the end G-code, the printer runs the tests (9 points) at 100% speed; as soon as it extrudes, it switches to 75% speed, and the speed returns to 100% before raising the head and stopping.

For a novice like me, this is much easier to set up than the method suggested above by _KaszpiR_ (whom I’d like to thank, by the way).

Bst rgds

RE: Changing print speed for a specific filament type

Bertrand — Thu, 26 Mar 2026 14:52:48 +0000

Hi, thank you for this detailed explanation. I'll give it a try, as best I can.

Friendly

RE:

_KaszpiR_ — Wed, 25 Mar 2026 20:03:00 +0000

1. load the model and slice it
2. in the sliced view in the legend select volumetric speed
3. take a note what is the speed for the given section - generally probably just perimeters speed is enough
4. in the Expert mode edit filament preset, in Advanced section look at the Max volumetric speed and lower it and reslice. You can also experiment with other speed movements parameters if needed.
5. repeat above until you get 75% speed
6. save as new preset.

I had recently situation that I had to change Silk PLA speed from 21mm^3/s to 4mm^3/s to make it to print properly...

RE: Changing print speed for a specific filament type

Bertrand — Wed, 25 Mar 2026 10:02:10 +0000

Tks for your replay,

does changing this value have the same effect as adjusting the speed in percentage terms, as the printer allows during printing ? How can I convert the 75% speed I set using the knob into volumetric speed ?

As you can tell, I’m no printing expert—far from it. 😉

rgds

RE:

_KaszpiR_ — Wed, 25 Mar 2026 07:55:00 +0000

Why not change max volumetric speed for that specific filament and save it as a new filament profile?

https://help.prusa3d.com/article/max-volumetric-speed_127176

Changing print speed for a specific filament type

Bertrand — Tue, 24 Mar 2026 21:18:16 +0000

Hello,

I lower the print speed when printing TPU to get better results. Currently, I do this using the rotary knob, but I'm wondering if there's any reason not to insert “M220 S75” in PrusaSlicer > Filament > Custom G-code > Start G-code and “M220 S100” in PrusaSlicer > Filament > Custom G-code > End G-code to restore the original speed % ?

Tks