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                  1. Support
                  2. Original Prusa i3 MK2.5S
                  3. Printer features
                  4. HW setup (MK2.5/S & MK3/S/+)
                   

                  Contents

                  • Options MK3/S/+
                  • Options MK2.5/S
                  • Nozzle diameter setup
                  • Preliminary checks
                  • Other options

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                  HW setup

                  (MK2.5/S & MK3/S/+)

                  Relevant for

                  MK2.5
                  MK2.5S
                  MK3
                  MK3S
                  MMU2S
                  +
                  11 comments
                  Article is also available in following languages
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                  Introduced in the firmware version 3.8.0 on the MK2.5, MK2.5S, MK3, MK3S, and MK3S+ there is a section in the Settings menu, called “HW setup”. It allows you to inform the printer/firmware of hardware changes and which actions to take in case of a conflict.

                  To access these settings, please go to the LCD Menu -> Settings -> HW setup

                  For each model the HW Setup menu differs a little:

                  Options MK3/S/+

                  • Steel sheet profiles
                  • Nozzle diameter [0.25/0.4/0.6/0.8]
                  • Checks
                    • Nozzle [Warn/Strict/None]
                    • Model [Warn/Strict/None]
                    • Firmware [Warn/Strict/None]
                  • FS Action
                  • F. sensor detection
                  • Experimental (Hidden setting which must be activated)

                  Options MK2.5/S

                  • Steel sheet profiles
                  • Nozzle diameter [0.25/0.4/0.6/0.8]
                  • Checks
                    • Nozzle [Warn/Strict/None]
                    • Model [Warn/Strict/None]
                    • Firmware [Warn/Strict/None]
                  • SuperPINDA [Yes/No] (MK2.5/S only)

                  hw setup

                  Nozzle diameter setup

                  By default, all Original Prusa printers are shipped with the 0.4 mm nozzle. In case you change the nozzle, you can set the correct diameter. The printer will then compare the stored value of the nozzle diameter with parameters saved by our Prusa Slicer in the G-code. If there is a mismatch, the printer is able to inform you and thus prevent a print failure.

                  This setting does not affect extrusion rates (flow) during First Layer Calibration. The article Different nozzle types will tell you more about First layer calibration for different nozzles.

                  Preliminary checks

                  Besides checking the nozzle diameter, the printer is now able to check other parameters to warn you about incompatible settings. Before a print starts, the printer will compare parameters stored in the memory with the G-code.

                  The controller parameters are as follows:

                  • Nozzle diameter (0.25, 0.4, 0.6 etc.)
                  • Model if the printer g-code is sliced for (MK3, MK3S+, MK2)
                  • Firmware version

                  For each you can set three levels of warnings for each controlled parameter:

                  • [none] - checking is turned off, the user won't receive any notification
                  • [warn] - a warning message will be displayed on the screen, then the user can continue with the print
                  • [strict] - a warning message will be displayed on the screen, the user can't continue until he fixes the issue, and print is aborted.

                  Other options

                  For an explanation of the other options, please click the linked listings in the menu hierarchy at the top.

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                  Topics

                  • About your printer
                    • Printer features
                      • HW setup (MK2.5/S & MK3/S/+)
                      • Steel sheet profiles
                      • Crash detection
                      • Filament sensor MK3 (non-S)
                      • Flexible steel sheets (guidepost)
                      • Print statistics
                      • Power-modes
                      • SD card sorting
                      • Pronterface and USB cable
                      • Prusa firmware-specific G-code commands
                      • IR Filament Sensor (MK2.5S, MK3S/+, MK3.5/S)
                      • LCD brightness adjustment (MK3S)
                      • SpoolJoin (MMU2S)
                      • Tune Menu
                      • LCD screen contrast adjustment (i3)
                      • IR Filament sensor detection (MK3S)
                      • Experimental menu (MK3/S/+)
                      • Water-soluble materials (PVA/BVOH)
                      • Satin steel sheet
                      • Textured steel sheet
                      • Smooth Steel Sheet
                      • Support menu (MK3/S/+)
                      • Dump memory (MK3/S/+ and MK2.5/S)
                      • Special PA Nylon steel sheet
                      • Crash dump (MK3/S/+, MK2.5/S)
                      • Thermal model calibration
                      • Sample G-codes
                      • Buddy firmware-specific G-code commands
                      • Tools Mapping and Filament Mapping (XL/+, INDX, MMU3)
                      • MMU3 Prusa Nozzle vs. CHT nozzle
                      • PP steel sheet
                      • List of parts for MMU upgrades
                      • MMU3 for CORE One L
                    • Printer description
                    • General Information

                  6 comments

                  Log in  to post a comment
                  n8maher
                  •
                  This page could use an update for Mk4/XL models.
                  Reply
                  Meowat BabiesTheCat
                  •
                  I changed the nozzle on my printer to a .5mm and it has drastically dropped the quality of my prints. The printer doesn't understand this and my benchies are not printing properly. Their edges are warped and continue to fold in on themselves. I have not changed any other settings other than the nozzle size in prusaslicer.
                  Reply
                  Yangorang
                  •
                  What if we want to use a nozzle diameter that isn't on the list 0.25/0.4/0.6/0.8 ?  Will it just always automatically fail every print?
                  Reply
                  William H. - Official Prusa
                  •

                  Hello. You can turn off warnings of this. It will only warn you of what the G-code is sliced for if selected. If your code is sliced for your nozzle, then you should be good. These options are only for what we provide presets for in PS. It will not affect the amount of flow of filament.

                  Reply
                  gdrag
                  •
                  Is the option to configure a 0.8mm nozzle in the works for a new firmware version? Version 3.9.3 for the MK3S+ seems to only give 0.25/0.4/0.6mm options when you click through the options.I understand it's only for validation when printing from gcode but I'm asking the question since the docs refer to a 0.8mm option specifically.
                  Reply
                  Jirka Novák
                  •
                  Thanks for you comment! Yes, I can confirm this feature is already on our roadmap of future FW releases. Please stay tuned
                  Reply
                  fred
                  •
                  Hi Guiliano, Hope there is a ticket to put it soon, should not be very difficult to add.  I bought this Tungsten 0.8 noozle and as the noob I am only know how to use the First layer calibration, that even on 0.6 I think it should extrude more.  Tomorrow I would try the 1 layer bed alignment stl making a GCode for 0.8 but I would rather use the settings prebuild function when I change noozles.Thanks!
                  Reply