1. WARNING: Current profiles were tested on the Cura 3.5.1 and may not work on the previous versions as there are new config files introduced.
    • WARNING: Current profiles were tested on the Cura 3.5.1 and may not work on the previous versions as there are new config files introduced.

    • The following guide will help you import and activate custom profiles tweaked by Josef Prusa for your Original Prusa i3 printer.

    • This guide is valid both for Microsoft Windows and Apple macOS. There are some small differences in the setup, pay attention to the instructions ;)

    • Important: latest profiles include PLA, ABS and PETG. Other materials are being tested.

    • Original Prusa i3 MK2/S and MK2.5 settings: mk2s_mk25_cura_profiles

    • Original Prusa i3 MK3 settings: mk3_cura_profiles

    • Download the package for your printer and unzip it.

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  2. The package includes several subfolders, which must be imported (or copied) into the Cura:
    • The package includes several subfolders, which must be imported (or copied) into the Cura:

    • Folder 01_Cura_printer_definitons includes profiles for the printers with dimensions, speeds and other parameters.

    • Folder 02_Cura_printer_extruders additional parameters for the printer, specifically for the extruder properties (new in Cura 3.5.1).

    • Folder 03_Cura_platforms includes platforms (heatbeds), which are just for the visual effect, though it is good to know, where your object will be printed on the heatbed.

    • Folder 04_Cura_layerheight_profiles includes settings for various layer heights (print quality).

    • Folder 05_Cura_Prusa_materials includes materials, which should be imported because default Cura material values differ from what is recommended for Prusa filaments.

    • File Readme.txt summarises changes to this package. No need to use it, unless you are curious ;)

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    • By default Cura list of printers does not include Original Prusa i3 models. Let's fix it ;) First, save your work and close the Cura software.

    • Open the unzipped package and go to the folder: 01_Cura_printer_definitions

    • MS Windows: in a second window head to C:\Program Files\Ultimaker Cura 3.5\resources\definitions

    • Apple macOS: in a second window head to /Users/YOURUSERNAME/Library/Application Support/cura/3.5/definitions

    • On Mac open the Finder, press "Command+Shift+G" and enter "~/Library" (without quotes)

    • The path can slightly differ, for example, if you have a different version of Cura installed. Also on macOS the "Library" folder is hidden.

    • Copy the file(s) "...def.json" from the package to the Cura folder.

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    • Open the unzipped package and go to the folder: 02_Cura_printer_extruders

    • MS Windows: in a second window head to C:\Program Files\Ultimaker Cura 3.5\resources\extruders

    • Apple macOS: in a second window head to /Users/YOURUSERNAME/Library/Application Support/cura/3.5/extruders

    • The path can slightly differ, for example, if you have a different version of Cura installed. Also on macOS this folder is hidden.

    • Copy the file(s) "...def.json" from the package to the Cura folder.

    there is no folder named “02_Cura_printer_extruders “

    Tor - Reply

    Hi Tor, have you downloaded the files from the links above?

    Jakub Dolezal -

    Hi Jakub,

    Looks like theres a typo on the Mac instructions as you are pointing to definitions rather than extruders :)

    Chris Page - Reply

    Hi Chris, correct. Fixed. Thanks ;)

    Jakub Dolezal -

    • In the unzipped package open the folder: 03_Cura_platforms

    • MS Windows: in a second window head to C:\Program Files\Ultimaker Cura 3.5\resources\meshes

    • Apple macOS: right-click on the Cura icon, from the context menu select "Show package contents", then open folders in following sequence Contents->Resources->resources->meshes

    • The path can slightly differ, for example, if you have a different version of Cura installed.

    • Copy the file(s) "...platform.stl" from the package to the Cura folder.

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    • From now on the steps are the same both for MS Windows and Apple macOS.

    • Now, open the Cura software

    • In case you run the software for the first time, you will be asked to Add a printer, in the list click on Other and select yours.

    • Use only profiles named "Original Prusa i3...", those are developed and tested by our company. If the printer name is missing the "Original" in its name, then it is from different manufacturer.

    • In case you are already working with Cura, go to Settings -> Printer -> Add printer and select yours.

    • Cura allows you to add one printer at a time. If you want to add more printers repeat this step.

    Make sure you look for “original prusa’, not just ‘prusa’ - recent versions of Cura have their own Prusa profiles already available, so you want to make sure you don’t choose those.

    Bernard Mc Clement - Reply

    Hi Bernard, exactly. There are more profiles, but only the ones with “Original” are from Josef Prusa.

    Jakub Dolezal -

    All,

    I just encountered a surprising side effect following these instructions for about the 3rd time (different laptops, new Cura version…). This time, I was printing and thought it an excellent idea to get Cura setup while waiting for this to finish. At this step, I have to assume that Cura decided to talk to the printer (the USB cable was attached), as it abruptly stopped printing, reset like I’d pushed the panic button, and froze there melting a blob at the top of the unfinished print. Oops. Luckily, this was a 15 minute experiment, but it would have really sucked on a 30 hour print! Perhaps this is worth a mention in the next update :)

    Scott - Reply

    Hey Scott,

    Thank you for the idea. USB connection can be easily disrupted, so it’s best to not do anything with the controlling software until the print is finished.

    Official Prusa Support

    Filip Misiło -

    • Go to Settings -> Profile -> Manage Profiles

    • Click on the Profiles and Import.

    • Find the profiles on your drive (folder 04_Cura_layerheight_profiles), select one and open it. Unfortunately, Cura doesn't support multiple profiles import at once.

    • Your new profile will appear under the Custom profiles. You can also click on Activate to select it or do it later on the main screen from a drop-down menu by simply selecting the profile.

    • Repeat this step until you import all the profiles you wanted.

    • DON'T CLOSE this window yet, we will use it in the next step.

    All the profiles import correctly except “MK3_0.2_Fast”. Cura reports a success but it won’t show up in the list. Is it just me (using Cura 3.4)?

    frank.deschner@gmail.com - Reply

    • Click on the Materials and Import.

    • Find the profiles on your drive (folder 05_Cura_Prusa_materials), select one and open it. Unfortunately, Cura doesn't support multiple profiles import at once.

    • Your new material will appear in the list named as Prusa (e.g. Prusa PLA). You can also click on Activate to select it or do it later on the main screen from a drop-down menu by simply selecting the profile.

    • Repeat this step until you import all the materials you wanted.

    Nozzle is still 2.8mm diameter in the profile, which makes the import not show anything.

    Changing the 2.8mm to 1.75mm in the printer setting resolves the issue.

    3.6.0 Version

    Evgeni - Reply

    • Before you slice and print, lets make a final check:

    • Your printer is selected (e.g. Original Prusa i3 MK2/S/MK2.5).

    • The desired material is used (e.g. Prusa PLA)

    • Correct custom profile is applied (e.g. MK2 0.2 Normal).

    • That is all! Enjoy your printer and happy printing ;)

    • You can discuss your experience and print results on Prusa Research forum.

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Finish Line

91 other people completed this guide.

Jakub Dolezal

Member since: 02/20/2017

112,986 Reputation

161 Guides authored

34 Comments

As usually Jakub, you did an amazing job! Works like a charm!

Charlie Bowen - Reply

Hi Charlie, thanks for the appreciation, it took some time to reverse engineer all the paths and tune the proper settings.

Jakub Dolezal -

Thanks for this!!!

Dan Eils - Reply

Hi Dan, you are welcome! Don't forget to share your prints on our forum ;)

Jakub Dolezal -

Lineal Advance don’t work in Cura? because the MK3 infill speed is 100mm/s, not 200mm/s.

And if don’t has LA and 200mm/s why the higher layer in the mk3 is 0.2mm and not 0.3mm?

Felipe - Reply

Hi Felipe, linear advance is being tested for Cura. Speed was optimised for the best printing results, but we are working on it as well.

Jakub Dolezal -

well done, I am a medium level user (computer skills and printer skills) and your complete instructions worked great. I think a newbe could handle this.

joe payette - Reply

Hi Joe, thanks :) The instructions are meant for everyone to enjoy their printer, I tried my best to write the instructions in a way, even newbies can finish this guide.

Jakub Dolezal -

Thanks Jakub! Takes only 5 mins :)

Simone Klocke - Reply

Hi Simone, that was fast :) Enjoy your printer!

Jakub Dolezal -

So after talking to the pursa support and they asked me, to comment my problem with the profile here:

I’ve installed the profile and everything on the latest Cura and got a very bad print at 0,05mm layerheight with this string-test: https://www.thingiverse.com/thing:221910...

The output was a “blobby” thing - it looked like extreme overextrusion.

So I’ve uninstalled Cura, reinstalled the profiles again from scratch … checked every setting 5 times… no chance.

Slicing with Slic3r worked (but Slic3r is not the tool I prefer).

Shortly before loosing all my hope, I’ve changed to the CURA-bundled Printer “Prusa i3 Mk2” (even I have an MK3!) and to Ultra-Detail 0.06mm layer height (not this profile) … and it worked. The prints are finally looking good again.

So I think there must be a problem with the profiles - or at least with the 50 micron profile.

You can contact me, if you need pictures or more information :-)

Rene - Reply

Hi Rene, noted and forwarded to our printing experts ;)

Jakub Dolezal -

Great walk through, but I have a problem where any job I open even from the PRUSA supplied SD Card appear off the build platform to the right with about 40% of the model off the platform which causes Cura to disable the print. Any ideas? I have not changed anything and followed the install procedure 100%.

Thanks for any help.

Dave - Reply

Hi Dave,

on the SD card are included G-codes, which are ready for print and Cura won't be able to make any change to them. That is why you see the “disabled” notion. If you want to adjust settings for the models we are including, please download the driver package, where STL files of these models are included and those can be modified https://www.prusa3d.com/drivers/

Jakub Dolezal -

Will any of these work with the mk2 MMU? I cant seem to configure cura myself to work with it at all, which sucks because it was my favored slicer before the upgrade.

kayla - Reply

Hi Kayla, for the MMU I recommend using Slic3r PE. Provided Cura settings were not optimised for the MMU.

Jakub Dolezal -

Thanks so mutch for these settings, they work perfectly for me.

David Nicolas - Reply

Hi David, thanks for the feedback, I'm glad it works for you ;)

Jakub Dolezal -

The retraction distance on the Cura profiles are set to 0.2mm which causes lots of strings. The setting in Slic3r PE are 0.8mm which produces no strings. Easy to update the setting but the profile need updating.

Dave Snaith - Reply

Hi Dave, the shorter retractions are set on purpose after many tests, which material (producer) is causing the strings and which printer are you using? Thanks

Jakub Dolezal -

I’m seeing a lot more stringing as well with PLA and the “Prusa PLA” material setting using the profiles as installed in this guide. What’s the recommended parameter to change? Retraction distance?

Gary Boone - Reply

I changed the retraction distance from 0.2mm to 0.4mm and saw much less stringing.

Gary Boone -

Hi,

Do any expert can share different nozzle size setting profile here?

Do any 0.6 nozzle and 0.25 nozzle setting prusa mk3 profile for cura ?

Thanks a lot.

Emerson - Reply

OK, loaded successfully in cura 3.5, but why are the default temperatures 210/60 and not 215/60 as per mk3 defaults?

Texy

Ian Teixeira - Reply

I noticed this too, already solving it with my colleagues.

Jakub Dolezal -

When I run a print on this, it looks like I need to lower the nozzle? I had a horrible first layer, so I think either some first layer setting is incorrect, or maybe the Goode for starting z-height is incorrect?

Right after I tried printing in Slic3r and I got a perfect first layer…what’s going on?

Misiu Kowalski - Reply

Hi Misiu, these settings shouldn't be affecting height of the first layer. Slicer is always responsible for setting the path and material distribution. Make a video to compare both situations and send it to us together with G-codes ;)

Jakub Dolezal -

Also…the speed for mk3 in the profile is insanely too fast compared with slic3r

Misiu Kowalski - Reply

Will investigate this, but all profiles were tested before publishing.

Jakub Dolezal -

would you fork Cura on GitHub and add this setting then propose it for Cura main version as usual?

this will make it so easy to update later in newer versions

Samir Abaza - Reply

Fork is planned, but it will take more time. Also the Cura devs needed to update their instructions a bit to comply with the 3.5.1 release.

Jakub Dolezal -

Thanks for the information.

Pam Jamer - Reply

Profile 0.1 has layer height 0.15. I also noticed that retraction distance is set to only 0.2 (compared to 0.8 in slicer profiles). This causes quite stringing when printing PET.

Kolouš - Reply

Hello, Are you sure you chose the "Original Prusa i3..." profiles? Not just “Prusa i3” ?

Martin L. - Customer Support -

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