Core ONE + MMU3 - no spool join option, no material assignment?
 
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Core ONE + MMU3 - no spool join option, no material assignment?  

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JinPrints
(@jinprints)
Mitglied
Core ONE + MMU3 - no spool join option, no material assignment?

Per the title, I've just finished a marathon upgrading my Mk4 to a Core ONE with MMU3 and although it works fine, some of the stuff that I've read or seen the MMU3 setup doing on other models seem to not be there in the Core ONE, notably;

Assigning filament types / colours to each slot seems to not exist in the menus - I can set materials up in the slicer and it prints OK but that means if the setup is ever "wrong" (EG wrong material / colour loaded in a slot Vs what the slicer thinks) the printer won't know there's a problem.

Spool join function seems not to exist - I thought I would be able to load a new reel in a spare slot and have the printer automatically change over when the 1st one ran out? I can't find an option or menu for this anywhere in the printer OR the slicer.

Is this right? Have I missed something?

I've just built it this week so all the firmware is the latest versions and all the tests and calibrations were passed.

Veröffentlicht : 30/10/2025 8:57 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Core ONE + MMU3 - no spool join option, no material assignment?

on the filament choice screen turning the knob one way allows you to change filament types, turning the knob allows you to substitute filament allocations, and do spool join!

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility.Location Halifax UK

Veröffentlicht : 30/10/2025 9:01 pm
JinPrints
(@jinprints)
Mitglied
Themenstarter answered:
RE: Core ONE + MMU3 - no spool join option, no material assignment?

What filament choice screen?

Posted by: @joantabb

on the filament choice screen turning the knob one way allows you to change filament types, turning the knob allows you to substitute filament allocations, and do spool join!

 

Veröffentlicht : 30/10/2025 10:00 pm
Richard3D
(@richard3d)
Eminent Member
RE: Core ONE + MMU3 - no spool join option, no material assignment?

maybe someone can make a video and show exactly how to do this.

Prusa Core One

Veröffentlicht : 31/10/2025 3:06 am
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