MK4 upgrade to MMU3(for MK4) and MK4S - how to proceed?
Hi,
I haven't found simillar topic. My concern is that I do not know if I can use the upgrades I purchased. From the beginning: I first bought and assembled MK4 kit (it works fine). Than I bought MMU3 upgrade for MK4 but before installing it I also bought an upgrade to MK4S. After receiving the boxes I realized that there is a special MMU3 for MK4S kit available. I don't know if there is a difference in parts. I also saw in some comments that someone claims that he used succesfully the upgrade to MK4S on MK4 with MMU3 and was able to print with no issues...
Has anyone done such chain upgrade? Could someone guide me how to proceed (e.g. what to install first) and tell me if I need to get some special parts?
Thanks in advance.
RE: MK4 upgrade to MMU3(for MK4) and MK4S - how to proceed?
Iirc, the difference is in included nozzle. The mmu3 is not recommended with HF nozzles, do the kit for mk4s have nonHF 0.4 nozzle.
RE: MK4 upgrade to MMU3(for MK4) and MK4S - how to proceed?
Dear Jacek. I was in the same situation, but there is no special upgrade necessary between MMU3 for MK4 and MMU3 for MK4S. The MMU3 is exactly the same. The upgrade kit you saw is from MK3/S to MK4(S).
That said: You do the upgrade of the printer from MK4 to MK4S. In the upgrade instructions, there is a special part about MMU3, just follow this.
Then you can upgrade the MMU3. This is completely independent from the other upgrade, but it was also not too clear for me before I did the upgrade. As strian has pointed out, it's better to print with the MMU3 with the standard nozzle.
RE: MK4 upgrade to MMU3(for MK4) and MK4S - how to proceed?
Thank you strjan and Zwirbel. I noticed yesterday the MMU3 part in the MK4S instructions - must have missed it last time (blind me 😉 )
So you say it's better to start with MK4 to MK4S upgrade following the MMU3 part in the instruction? If I good understand it, I should be able to test the MK4S upgrade without the MMU3 before going to the next one?
RE: MK4 upgrade to MMU3(for MK4) and MK4S - how to proceed?
Yes, I would certainly build the MK4S upgrade first, then test the printer. Only if everything works fine, then you can add the MMU3 to the mix. As mentioned, both "upgrades" are independent.
RE: MK4 upgrade to MMU3(for MK4) and MK4S - how to proceed?
Mam dotaz, jak postupovat pri upgrade MMU3. Sestavil jsem a zprovoznil upgrade MK4S z MK3S+. A nymi potrebuji upgrade na stavajico MMU3 pro MK4S. Bohuzel sada na upgrade jiz na strankach Prusi meni k dispozici a technicka podpora me odkazala na blog. Nevite nekdo jak postupovat? Predem diky za radu.
RE:
Moc lidí ti asi tady nebude rozumět 😉 .
Tak postupně.
Máš originál MMU3 pro mk4s?
Upgrade MK4 / MK4s je v úpravě vstupu extruderu a modifikaci filament senzoru. Tyto věci by měly být součástí balení MMU3 - pozor abys objednal MMU upgrade pro MK4/MK3.9
Z návodu na upgrade použiješ jen část týkající se upgrade MK4 extruderu, MMU3 už máš sestavené.
RE: MK4 upgrade to MMU3(for MK4) and MK4S - how to proceed?
Mám koupené originální MMU3 pro MK3S. Tiskárnu MK3s uprgradoval pomocí koupené sady upgrade na MK4S. A nyní potřebuji přestavět MMU3 aby fungoval na MK4S. V eshopu Prusa ale není žádá sada MMU3 upgrade ke koupi.
RE: MK4 upgrade to MMU3(for MK4) and MK4S - how to proceed?
Did you explain all this to Prusa support? There is only little difference between MMU3 for MK3S and MMU3 for MK4S (a few parts) and Prusa should be able to send you those.
RE: MK4 upgrade to MMU3(for MK4) and MK4S - how to proceed?
I just love the automatic translation from Czech to Polish. I wasn't aware that Prusa printers are equipped with "philanthropy sensor" 🤣
RE: MK4 upgrade to MMU3(for MK4) and MK4S - how to proceed?
Dobrý den,
ano komunikoval jsem to s technickou podporou. Bohužel bez konkrétní pomoci, pouze příslib řešení do budoucna v rámci stránek Průši.
RE: MK4 upgrade to MMU3(for MK4) and MK4S - how to proceed?
Je skoda, ze jste nekoupili MMU3 variantu pro MK4, pokud vim jeji soucasti jsou i dily pro upravu nextruderu a kabel pro MMU3 MK4.
Co je potreba pro mk4:
1. Pokud u MMU nebyl PD board, tak ho prikoupit
2. Spojivaci kabel mmu4/ mk4 je v nahradnich dilech
3. Uprava extruderu je nezbytna a tady zacina challenge. Co je lotreba lze vydedukovat z axti navodu na mmu upgrade.
RE:
Rozchodit MMU3 co bylo zakoupeno k MK3S nebo drivejsim, na novejsich MK4S - je vcelku peklo. Resite to napr. pri koupeni upgradu MK3S =>MK4S, kdyz chcete nasledne na MK4S provozovat MMU3. Hlavni problem tkvi v tom, ze se musi velmi specificky upravit Nextruder na MK4.
Jediny manual manual sekce 9Apredpoklada, ze jste si koupili MMU3 kit k MK4S a mate plastove komponenty dodane v kitu (z PCCF + jedna netisknutelna), neobvykle sroubky, magnet atp. Nic z toho nemate, pokud jste si poridili MMU3 pro MK3. To se vsak dozvidate az v prubehu manualu napr. formou - a ted vlozte sroubek M3x35, ktery se nikde jinde v tiskarne nevyskytuje. Nikde neni varovani predem.
Support netusi. Kontaktoval jsem je 3x. Ruzni lide. Pokazde skoncil s rozdelanou, nefunkcni tiskarnou na jinem "prehlednuti" na ktere jsem musel support upozornit. Zatim to nevypada (dle supportu, kveten 2025), ze by Prusa vydal spravny upgrade "pytlicek" komponent pro montaz na MK3 provozovaneho MMU3 pro MK4S.
Dost narikani, tady je postup co mi fungoval.
Predpoklady:
- Mate funkcni MK4/S... bez MMU3 jedno zda z upgradu na MK3=>MK4 nebo z obchodu.
- Mate funkcni MMU3, co bezelo na nekterem drivejsim modelu nez MK3.9/MK4
- Predpokladam MMU3 koupene po dubnu 2024, takze neresite upgrade MMU3, zasobniku atp. Pokud mate drivejsi, tak jeste navod zde. Bacha pro jeste starsi verze muze byt nutne koupit jine Festo priruby a PCFE trubicku. Toto jsem nepotreboval, ale nekde v manualech zahledl.
Jak na to:
Nejprve zjistite, ze potrebujete jiny MMU3 kabel + normalni trysku (nikoli vysokoobjemovou dodavanou s MK4S). Oboje jde koupit na eshopu.
- kabel
- tryska (Ignorujte, ze oznacena jako nekompatibilni s MMU3)
1) Pak musite ziskat komponenty pro modifikaci Nextruderu MK4S aby fungoval s MMU3.
Dve moznosti:
- pro odvazne co maji PCCF material a zkusenost s jeho tiskem, existuji .stl soubory. Manual a diskuze primo pise, komponenty vyrabejte z materialu PCCF :(, support rika kvuli teplote.
- My ostatni si koupime:
2) Dale je potreba main plate.
"main-plate je vytištěn 3D technologií MJF. Bohužel jej nelze vytisknout ve stejné kvalitě pomocí bežné technologie 3D tisku, FDM."
Tak pravi manual: strana 101.
Nikdo negarantuje, jak budou fungovat pokud si je udelate z PETG - ve stejne sekci jako komponenty vyse na printables.
Na eshopu jde koupit, ale dejte si bacha at koupite ten v sade po dvou pro MMU3a ne ten main-plate po jednom kuse z PETG v sekci pro MK4S.
3) Chybejici valcovy magnet 3x1, nejde koupit na Prusa eshopu (kveten 2025)
- good luck se shanenim. Osobne jsem klestema rozlamal maly neodym a vecpal ho do spravne skviry v potrebne komponente.
4) Chybejici sroubky M3x22 a M3x35, ktere nejdou vzit z drivejsich tiskaren ani nejdou koupit na eshopu (kveten 2025).
Tak pravi manual: strana 101.
Pak Vam to bude fungovat.
Hodne zdaru!!
RE: MK4 upgrade to MMU3(for MK4) and MK4S - how to proceed?
A 3x1 magnet and the necessary screws can surely be purchased from local model parts retailers.
RE: MK4 upgrade to MMU3(for MK4) and MK4S - how to proceed?
One addition to my guide above:
5) Print this Screw guide: screw-guide-R2.stl as it is not on your original MK4 Nextruder (PETG material is ok)