Open thess opened 3 weeks ago
Yes, 0.4mm is only supported nozzle diameter for multi-material prints, but you can use other diameters for single material prints (single nozzle prints are supposed to be sliced with standard MK4 non-MMU profile).
Not a very encouraging answer... Seems like we lost a bit of desired functionality on the upgrade. Any hints as to whether this will change in the near future. If not, then this is indeed a step backwards. I guess we have some work to do ;)
This is a terrible answer. The whole point of nextruder is being able to quickly change nozzle types. So using mmu3 means that goes overboard? Come on prusa.
As a "workaround", I did the following:
Go to the PrusaResarch.ini (in Windows it is located in C:\Users\
Copy&Paste the whole block starting with [printer:Original Prusa MK4 MMU3 0.4 nozzle]
ending with default_filament_profile = ...
Example for 0.25 nozzle:
[printer:Original Prusa MK4 MMU3 0.25 nozzle]
inherits
value to Original Prusa MK4 Input Shaper 0.25 nozzle
printer_variant
to 0.25
nozzle_diameter
values with 0.25
max_layer_height
values from the related simple IS profile i.e. 0.15
for a 0.25 nozzleP0.4
in the start_gcode
to P0.25
default_print_profile
from the simple IS profile i.e. 0.12mm STRUCTURAL @MK4IS 0.25
Then search for [printer_model:MK4ISMMU3]
and add all the nozzle variants you added e.g. variants = 0.4; 0.25
Keep in mind that if the configuration wizards asks you to update the profiles, the values will be overriden again (just click "Don't install")
OR if you trust my pre-configured blocks (for 0.25, 0.3, 0.5, 0.8):
No guarantess that they actually work (but I tested the 0.25 profile successfully) .
@ZzetT - Yes, I did essentially the same thing for testing and have done several successful prints with no MMU hang-ups. Glad to see another confirmation of the workaround.
Thx for your Post, for me, it's working now . . . I took the lazy way, using the MMU3_profiles.txt
I wonder, there are so much more Information for MMU3 @ MK4, than for MK3.5, but finally, it works ;-)
MMU3_profiles.txt is working fine for me too. Thank you for posting the workaround.
@ZzetT Thanks for your notes and example file, just started up a .6mm nozzle print on my MK4/MMU3.
Description of the bug
Current slicer profiles for MK4 + MMU3 (1.13.2) offer support for 0.4mm nozzle only. We need more nozzle sizes supported
Project file & How to reproduce
Selection "Configuration Wizard... -> Prusa FFF -> Original Prusa i3 MK3 MMU3" only shows 0.4mm nozzle option.
Missing alternate nozzle sizes.
Checklist of files included above
Version of PrusaSlicer
2.7.4+linux-x64-GTK3
Operating system
Ubuntu Linux 22.04.4
Printer model
Original Prusa i3 MK4 + MMU3