PrusaSlicer 2.9.4 with built-in filament calibration
 
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PrusaSlicer 2.9.4 with built-in filament calibration  

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hyiger
(@hyiger)
Famed Member
PrusaSlicer 2.9.4 with built-in filament calibration

I've been working on extending PrusaSlicer to have similar built-in calibration tools as OrcaSlicer. You can find it here: PrusaSlicer 2.9.4 - Calibration Edition 0.0.4 the installers are under the Assets section. One huge caveat is I'm have trouble getting github to automatically build the Windows version so as of now I only have versions for MacOS and Linux. I should be able to solve it later today. Worst case is I'll fire up windows and create a manual build. 

There is also support for skew correction under Printer settings

Posted : 25/03/2026 1:46 pm
6 people liked
hyiger
(@hyiger)
Famed Member
Topic starter answered:
RE: PrusaSlicer 2.9.4 with built-in filament calibration

I... finally... got github to do a complete windows build. I haven't tested yet (mostly a MacOS and Linux guy), I do have Windows 11 running of a MelePC so will try it later. Have a look here: https://github.com/hyiger/PrusaSlicer/releases/tag/v0.0.4-calibration

Posted : 26/03/2026 2:21 pm
jan.d.slay
(@jan-d-slay)
Reputable Member
RE: PrusaSlicer 2.9.4 with built-in filament calibration

I'm using Windows 11 with the latest updates installed, but it won't open.

Mods for Core One: Core One HT 450 degrees, Comfortable display , Very fast print start and Reducing noises
Mods for Prusa XL: Very fast print start

Posted : 26/03/2026 3:44 pm
hyiger
(@hyiger)
Famed Member
Topic starter answered:
RE:

 

Posted by: @jan-d-slay

I'm using Windows 11 with the latest updates installed, but it won't open.

It's probably a security issue. I'll have a look later and report back. I've only tested so far on MacOS and Linux. Getting it to build at all in Windows took 3 days of fiddling... 😥 😥 

Posted : 26/03/2026 4:07 pm
jan.d.slay
(@jan-d-slay)
Reputable Member
RE: PrusaSlicer 2.9.4 with built-in filament calibration

I think so too. The first time I clicked on it and tried to open it, a message popped up asking if I really wanted to open the program.

Mods for Core One: Core One HT 450 degrees, Comfortable display , Very fast print start and Reducing noises
Mods for Prusa XL: Very fast print start

Posted : 26/03/2026 4:45 pm
gb160
(@gb160)
Prominent Member
RE:

Ooh this looks good, I’ll test in tomorrow mate.

sorry to be a pain but would it be much hassle to include macOS Intel build?

Normally I use MacOS Arm64,  but on occasion i still use my old MacBook Pro Intel and it would probably take an eternity to build from source on that old thing. No worries if this is a problem, I’ll try on my M4 tomorrow.

 

It’s  honestly baffling why these features haven’t been included by Prusa already…maybe in PS3 ?

Posted : 26/03/2026 7:53 pm
hyiger
(@hyiger)
Famed Member
Topic starter answered:
RE: PrusaSlicer 2.9.4 with built-in filament calibration

 

Posted by: @gb160

Ooh this looks good, I’ll test in tomorrow mate.

sorry to be a pain but would it be much hassle to include macOS Intel build?

Normally I use MacOS Arm64,  but on occasion i still use my old MacBook Pro Intel and it would probably take an eternity to build from source on that old thing. No worries if this is a problem, I’ll try on my M4 tomorrow.

 

It’s  honestly baffling why these features haven’t been included by Prusa already…maybe in PS3 ?

I think I can add an Mac Intel build. I'll let you know when it's up. 

Posted : 26/03/2026 8:52 pm
1 people liked
gb160
(@gb160)
Prominent Member
RE: PrusaSlicer 2.9.4 with built-in filament calibration

Maybe easier to generate Mac universal build?

I think Prusa just generate MacOS Universal build through GitHub action?

Posted : 26/03/2026 9:18 pm
hyiger
(@hyiger)
Famed Member
Topic starter answered:
RE: PrusaSlicer 2.9.4 with built-in filament calibration

 

Posted by: @gb160

Maybe easier to generate Mac universal build?

I think Prusa just generate MacOS Universal build through GitHub action?

Yep, I suppose I could. I don't have access to a (working) Intel Mac so hard to test but I'll give it a go. 

Posted : 26/03/2026 9:21 pm
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hyiger
(@hyiger)
Famed Member
Topic starter answered:
RE: PrusaSlicer 2.9.4 with built-in filament calibration

 

Posted by: @gb160

It’s  honestly baffling why these features haven’t been included by Prusa already…maybe in PS3 ?

Prusa seems to have an adversion to copying others (since it's already in Orca). That would be my guess. 

I'm currently working on a cloud-based filament management DB that is also integrated into PrusaSlicer. Stay tuned...

Posted : 26/03/2026 9:43 pm
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hyiger
(@hyiger)
Famed Member
Topic starter answered:
RE:

 

Posted by: @jan-d-slay

I think so too. The first time I clicked on it and tried to open it, a message popped up asking if I really wanted to open the program.

The Windows version is now working. If you see a blue security screen on startup, go to advanced and click on "run anyway"

Posted : 26/03/2026 10:17 pm
1 people liked
hyiger
(@hyiger)
Famed Member
Topic starter answered:
RE: PrusaSlicer 2.9.4 with built-in filament calibration

 

Posted by: @gb160

Maybe easier to generate Mac universal build?

I think Prusa just generate MacOS Universal build through GitHub action?

Created a MacOS universal binary. 

Posted : 27/03/2026 6:29 am
1 people liked
jan.d.slay
(@jan-d-slay)
Reputable Member
RE: PrusaSlicer 2.9.4 with built-in filament calibration

The Windows version is now working. If you see a blue security screen on startup, go to advanced and click on "run anyway"

 

Yep, that's right. It's working now. Thanks a lot, Hyiger! 😀

Mods for Core One: Core One HT 450 degrees, Comfortable display , Very fast print start and Reducing noises
Mods for Prusa XL: Very fast print start

Posted : 27/03/2026 6:39 am
wheelz
(@wheelz)
Eminent Member
RE: PrusaSlicer 2.9.4 with built-in filament calibration

How do you install the Windows version? Do you just copy all the files overtop of the PrusaSlicer install?

Posted : 28/03/2026 5:48 pm
hyiger
(@hyiger)
Famed Member
Topic starter answered:
RE: PrusaSlicer 2.9.4 with built-in filament calibration

 

Posted by: @wheelz

How do you install the Windows version? Do you just copy all the files overtop of the PrusaSlicer install?

Just until the distribution anywhere and run in-place. There is no installer. 

Posted : 28/03/2026 6:35 pm
wheelz
(@wheelz)
Eminent Member
RE: PrusaSlicer 2.9.4 with built-in filament calibration

 

Posted by: @hyiger

 

Posted by: @wheelz

How do you install the Windows version? Do you just copy all the files overtop of the PrusaSlicer install?

Just until the distribution anywhere and run in-place. There is no installer. 

The reason I asked was that I did a folder compare to see what changed from the original install and I noticed there are some files and folders that are in the main PrusaSlicer but not the calibration one. The calibration one is missing the prusa-gcodeviewer.exe and there are also a mesa and Rambo folders with files in them that aren't in the calibration one. I'm not sure what may be downloaded after installing the main one though.

Posted : 30/03/2026 12:09 pm
gb160
(@gb160)
Prominent Member
RE: PrusaSlicer 2.9.4 with built-in filament calibration

Im gonna be a PITA again 🤣
If I'm honest, I've be using Orca exclusively for the last few months and only dipping my toe back in the water because I just know that I'll have to use PS when the INDX kit starts arriving.
Ive been using Orca primarily for the calibration features it offers over PS, and a few other QOL improvements as well.

Which brings me to my request:
Is there any way to implement the Orca version of the Flow Calibration/Extruder Multiplier test?...I know the method here is the one that Prusa suggests, but it's a deeply flawed approach.

Posted : 30/03/2026 12:23 pm
hyiger
(@hyiger)
Famed Member
Topic starter answered:
RE: PrusaSlicer 2.9.4 with built-in filament calibration

 

Posted by: @gb160

Which brings me to my request:
Is there any way to implement the Orca version of the Flow Calibration/Extruder Multiplier test?...I know the method here is the one that Prusa suggests, but it's a deeply flawed approach.

Actually I've started working on it. Stay tuned. 

Posted : 30/03/2026 1:35 pm
1 people liked
hyiger
(@hyiger)
Famed Member
Topic starter answered:
RE:

 

Posted by: @gb160
Is there any way to implement the Orca version of the Flow Calibration/Extruder Multiplier test?...I know the method here is the one that Prusa suggests, but it's a deeply flawed approach.

Wanted to add to this (as an interesting reference) that PrusaSlicer doesn't have an easy way to attach distinct custom g-code to individual objects on the same layer. In the case of YOLO, each coupon has it's own extrusion rate.  It can be done in (low-level) code or as a post-processor script but not at the UI level.

In Orca or Bambu this is much easier to do. I guess what I'm trying to say is that Orca being a fork of Bambu being a fork of Prusa, there is a lot of interesting innovation in Orca that hasn't made it's way back into to Prusa. Wondering if PrusaSlicer 3.0 addresses this. 

Posted : 30/03/2026 3:12 pm
1 people liked
gb160
(@gb160)
Prominent Member
RE: PrusaSlicer 2.9.4 with built-in filament calibration

Yeah Orca has some great features, but just discovered it has no regex gcode replacement, which can be invaluable at times.

Posted : 30/03/2026 3:17 pm
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