Changing Printing Speed on MK4S with MMU3
 
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Nodak7
(@nodak7)
Active Member
Changing Printing Speed on MK4S with MMU3

Help! OK obviously I am missing something here. I am trying to print some items that have over hangs. One recommendation was to reduce the print speed. Seemed like a good, simple and straightforward suggestion. Once the print has started I go to menu on the printer screen select "Tune" then select "Print Speed". When I change it from 100% to 60%  it does slow it down. Unfortunately when the printer changes filaments it returns to 100%. I tried changing it on each filament but it just returns to return to 100% after each filament change. How can I stop that change? Am I missing something else I need to do?

Posted : 20/07/2025 8:17 pm
BaconFase
(@baconfase)
Reputable Member
RE: Changing Printing Speed on MK4S with MMU3

Speeds and temps are more or less reset on every filament(MMU)/tool(XL) change so tuning these options at the machine during a print is temporary at best with no way around it outside of babysitting your printer at every single change.

If you need to slow overhangs down by 40% to get a successful print then you should edit those parameters in the slicer, reslice, and redo the print.

XL-5T, MK3S MMU3 || Printing with multiple nozzle-sizes: Official Guide, Unofficial || PrusaSlicer Fork || Other advanced slicer tactics || TPU

Posted : 22/07/2025 3:42 am
Nodak7
(@nodak7)
Active Member
Topic starter answered:
RE: Changing Printing Speed on MK4S with MMU3

Thanks for the reply Bacon! Seems to be the case. Where in the Slicer do I find the speed setting? When I go under the "Print Settings" tab I see no Print speed setting per se. Lots of other settings I am not familiar with!

Posted : 22/07/2025 11:11 am
BaconFase
(@baconfase)
Reputable Member
RE: Changing Printing Speed on MK4S with MMU3

The slicer doesn't have an "overall print speed setting percentage" like what the lcd knob does. Instead, all the different features' speed settings are enumerated out in Print Settings>Speed and this block of parameters is for overhangs:

XL-5T, MK3S MMU3 || Printing with multiple nozzle-sizes: Official Guide, Unofficial || PrusaSlicer Fork || Other advanced slicer tactics || TPU

Posted : 24/07/2025 7:17 am
Nodak7
(@nodak7)
Active Member
Topic starter answered:
RE: Changing Printing Speed on MK4S with MMU3

Thanks again Bacon! I know that in the slicer these settings can be changed for each individual filament. I guess I will have to play around a bit to find the optimal setting. Nothings straightforward. LOL

Posted : 24/07/2025 11:34 am
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