PrusaSlicer 2.9.3 Final is out
 
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Do you like the new "Consistent Surface" cooling feature in PrusaSlicer 2.9.3? Poll is created on Sep 16, 2025

  
  
  
  

PrusaSlicer 2.9.3 Final is out  

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Petr Kubiš
(@petr-kubis)
New Member
PrusaSlicer 2.9.3 Final is out

We released the final version of 2.9.3 last week!

Key Features in PrusaSlicer 2.9.3

New "Consistent Surface" cooling: Smarter logic for improved outer wall quality on fast layers.

Short travel acceleration: Reduces ringing by slowing only the shortest travels on external perimeters.

Custom G-code parameters: Define your own variables in profiles for flexible G-code customization.

📌 Want the Full Changelog? View on: Github Release Notes

➡️  Want to Try It new version? Visit:  PrusaSlicer Homepage

This topic was modified 4 months ago by Jan Kratochvíl
Posted : 16/09/2025 8:51 pm
Daniel
(@daniel-43)
Member
RE:

Well, this is awkward. Updated to this version and immediately lost MMU3 functionality on the Core One we're using in the office here at work.

PrusaSlicer workflow is the same, but it consistently fails to generate the actual Change Extruder Gcode when slicing. Preview shows the color changes but the actual code is just a continuous run with Extruder 1.

Tried rolling back to 2.9.2 by downloading that old version installer from the website and it doesn't even have the option for the Core One with MMU3 in the Configuration Wizard (where I know for a fact it was present when I installed that version of the slicer the first time).

What is going on? We need this functionality for the things we're printing at work for 5S projects we're using it for (basically printing tool holders for various tools throughout the machine shop--end mills, etc., with clear labeling with contrasting colors between the main body of the part and the lettering).

This post was modified 4 months ago by Daniel
Posted : 19/09/2025 6:09 pm
Daniel
(@daniel-43)
Member
RE: PrusaSlicer 2.9.3 Final is out

Tried to delete previous post, but update for fix. Manually nuked installation (uninstall, browse to various folders where installation files/configs/etc. were stored, deleted them) and performed a fresh install and things seem to be back to normal.

No idea how the update process messed up so spectacularly, but going forward we'll just uninstall/perform a fresh install.

Posted : 19/09/2025 6:33 pm
Marcin Aleksanderek
(@marcin-aleksanderek)
Member
RE: PrusaSlicer 2.9.3 Final is out

Hi,
Can You please tell me which application executable is trying to reach Your server?
I am trying to install this in company but seems like firewall is blocking the connection. I have added the Firewall rules for 3 exes in installation directory but it did not help.
- Downloading resources: Archive Database Manifest(Failed to connect to preset-repo-api.prusa3d.com port 443: Timed out
[Error 28]) <- error
- Update check failed for the following errors <-error

Posted : 27/11/2025 9:40 am
Marcin Aleksanderek
(@marcin-aleksanderek)
Member
RE: PrusaSlicer 2.9.3 Final is out

Posted : 27/11/2025 9:59 am
Matt C
(@matt-c)
Member
RE: PrusaSlicer 2.9.3 Final is out

I would like to see a change during the printing process.  When a print encounters an error (i.e. filament stuck), we can go in and be allowed to do an in-process head swap.  I'm currently in the middle of a print, sitting at 44% complete.  The printer encounter this very issue, filament stuck.  I am no where near my printer, infact, out of the area and unable to assist in correcting this issue.  I would like to be able to swap the printer head from, say, head number 3 to head number 5 mid-print.  Can that be in the next update?

Posted : 17/01/2026 10:08 pm
Sembazuru
(@sembazuru)
Noble Member
RE: PrusaSlicer 2.9.3 Final is out
Posted by: @matt-c

I would like to see a change during the printing process.  When a print encounters an error (i.e. filament stuck), we can go in and be allowed to do an in-process head swap.  I'm currently in the middle of a print, sitting at 44% complete.  The printer encounter this very issue, filament stuck.  I am no where near my printer, infact, out of the area and unable to assist in correcting this issue.  I would like to be able to swap the printer head from, say, head number 3 to head number 5 mid-print.  Can that be in the next update?

This would be an ask of the PrusaConnect team, not the PrusaSlicer team. (Yes, you can access PrusaConnect from within PrusaSlicer, but all PrusaSlicer knows is it is serving you a web page. Just like accessing PrusaConnect via your web browser.) I'm not sure how to contact the PrusaConnect devs since they don't appear to have a github.

See my (limited) designs on:
Printables - https://www.printables.com/@Sembazuru
Thingiverse - https://www.thingiverse.com/Sembazuru/designs

Posted : 20/01/2026 11:28 pm
1 people liked
Neophyl
(@neophyl)
Illustrious Member
RE: PrusaSlicer 2.9.3 Final is out

Weirdly enough they do seem to actually read the PrusaConnect section on the forum here.  Unlike everyone else.

Posted : 21/01/2026 1:41 pm
1 people liked
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