RE: Core One MMU3 Prototypes
This is a joke, if you retrofit the MMU3 you lost the capability of print technical materials......
Release imminent!
RE: Core One MMU3 Prototypes
Whay makes you say that?
This is a joke, if you retrofit the MMU3 you lost the capability of print technical materials......
Release imminent!
--------------------
Chuck H
3D Printer Review Blog
RE: Core One MMU3 Prototypes
Yea I ordered the upgrade kit...and thinking of scrapping the idea of using my MMU3 with the Core One and just convert my MK4S back to single.... or just cancel the upgrade kit... and apply money to another printer...
I just don't understand why Mr. Prusa does not just come up with a better idea? I can understand upgrades ... but really need something better From Prusa
Forgive me if I’m missing something here, but isn’t that exactly what the next-gen version will be if it’s redesigned from the ground up?
But how long will that be? It's been several months or waiting to get this rather 'mediocre' update. Honestly, I was expecting more. Especially when other companies have proven solutions that work perfectly well (coming from personal experience). Instead Prusa are lagging well behind yet again - I mean, it's not as though any of this is a new technology - it's all there, proven, working. Just seems as though Prusa have no idea on how to implement it onto their printers, which doesn't bode well with me.......
RE:
From this video I understood that PRUSA if far from release a new MMU as I expected. The point here is the design. If they want to do something that really works it will require time.
All the other AMS like boxes use a motor connected to the bars that hold the spools. The friction is done by the spool weight. When the spool is near the end, the less weight causes less friction, and the spool may slip and not be able to rotate and pull the filament (except the H2D). Almost all the AMS cut the wire, so that they are sure to have an easy retraction. They have a purge mechanism and head clean-up, that PRUSA does not have and will never have unless to design a new machine. Prusa has such measures that the print head is not capable to go 5/10 cm outside the bed in any direction. Those who implement several filament tubes that go to the print head, have an easy life since the filament retraction will be only 3 or 4 cm, just before the final mixer. But this causes an extreme force and mass to move the print head at high speed, causing bad print quality.
As result the ideal new MMU (filament swapper) should:
- Have a pressure bar/bearing even on the top of the spool to ensure the spool is always in grip state.
- Have the motor that moves the rolls in sync with the extruder to help the pulling of the filament that otherwise it would require too force.
- Probably 5 spools will be too many to put on the top of the printer, so 4 could be the ideal number, as the competitor have done.
- Probably the Nextruder should be redesigned. It was really designed for a manual usage. All attempts to do an auto feeding failed in some phases just because in order to have a reliable process, it would require more sensors and a new design, and a much higher final cost.
- Take care of the perfect shape filament tip, to avoid the filament tip jams inside the tube.
And the cost is the final point. A perfect MMUx, looking at the PRUSA actual price scale, could cost from 500 to 700$, that is the price of a full printer on the market. They should keep the price under 400$ to be reasonable. Unless USA and EU will put Duties that will double or triple the prices, they will never be able to compete with the Chines prices.
However I don't think the filament swappers are a solution for the multi filament print. I want a reliable and cost effective multi tool even on small plates (250x250x250). I have already the MMU3 and in order to have some reliable multi material print (e.g. PETG/PLA) they really require more than one physical nozzle.
Until surprises by PRUSA, I will wait for the Bondtech INDX multi tool solution being on the market in fall 2025, to see the first real feedback.
I already have an MMU3 on my PRUSA MK3.5, and I kept the MK4S and CORE One as they are. I hope that PRUSA will do a solid partnership with Bondtech to release printers that have this new technology. PRUSA is open source, but even Voron is open source, and this does not prevent to install proprietary parts based on how you choose to configure your printer. So PRUSA could continue as they are doing now, and just add Bondtech pressure extruders, and INDX tool changer, without changing their philosophy. When you order the printer, just choose the configuration.
So I would like that PRUSA instead of investing time to design an MMUx would invest time to create a CORE X printer that would use the Bondtech INDX multi tool and the Bondtech pressure sensitive nozzles (basically replacing completely the Nextruder). That would be the Market winning 2026 product. If PRUSA will miss that opportunity may be Creality will not... 😎
Regards
RE: Core One MMU3 Prototypes
Interested to hear opinions on the enclosed solution that Prusa will be placing up on Printables soon - and read up on user experiences.....
In the meantime, Im also interested to hear if anyone has bolt on the MMU3 to their Core One, and rather then feed from the top, redirect the PTFE so it feeds in from the existing side of the Core One? I know that's a longer run, meaning more retraction when changing filaments, but interested to hear if it will work the same...... It's the solution I'm considering as I have a shelf above my printer for filament spools already - and I would like to keep the top panel of the printer intact rather then leave it open, cut into it, or implement that ugly cover Prusa showed as a possible solution. I think I'd like my MMU3 to feed into the existing right side instead.......
RE: Core One MMU3 Prototypes
There's at least two solutions out there that modify the top cover to allow feed from the top and maintain chamber temperature.
RE: Core One MMU3 Prototypes - So glad I got a refund
We knew it was coming... In order to stay competitive Prusa had to break the upgradability guarantee and start fresh. Which means MK4/MMU customers (like me) and perhaps Core One customers have no path forward. It probably is a smart business decision for Prusa. They can't keep dragging the existing customer base along every time they want to introduce a new product. All that energy and time should be devoted to innovation not servicing old machines. Businesses are not going to take apart and rebuild existing printers, they are going to write them off and purchase new. The home market will obviously suffer somewhat. Excited to see what Prusa comes up with next as long as it doesn't take 10 years and they shorten the time between announcement and delivery. Two months ago I became frustrated with the wait and lack of information. So I requested a refund and used the money to buy an Bambu X1C. My MK4/MMU and X1C have been happily tag teaming on printing projects. The X1C is a diva; requires more attention and has painfully slow color printing. The Mk4 is a heavy metal workhorse that hardly ever complains.
RE: Core One MMU3 Prototypes
He only said there will be no upgrade from MMU3 to the new system. He did not say there would be no upgrades for other products. He also did not say that the new system would not work with CoreOne or MK4S.
We knew it was coming... In order to stay competitive Prusa had to break the upgradability guarantee and start fresh. Which means MK4/MMU customers (like me) and perhaps Core One customers have no path forward. It probably is a smart business decision for Prusa. They can't keep dragging the existing customer base along every time they want to introduce a new product. All that energy and time should be devoted to innovation not servicing old machines. Businesses are not going to take apart and rebuild existing printers, they are going to write them off and purchase new. The home market will obviously suffer somewhat. Excited to see what Prusa comes up with next as long as it doesn't take 10 years and they shorten the time between announcement and delivery. Two months ago I became frustrated with the wait and lack of information. So I requested a refund and used the money to buy an Bambu X1C. My MK4/MMU and X1C have been happily tag teaming on printing projects. The X1C is a diva; requires more attention and has painfully slow color printing. The Mk4 is a heavy metal workhorse that hardly ever complains.
RE: Core One MMU3 Prototypes
He also did not say they would. When he said there would be a complete reimaging of the solution from the ground up that sounded pretty drastic. Maybe I read too much into it?
He only said there will be no upgrade from MMU3 to the new system. He did not say there would be no upgrades for other products. He also did not say that the new system would not work with CoreOne or MK4S.
We knew it was coming... In order to stay competitive Prusa had to break the upgradability guarantee and start fresh. Which means MK4/MMU customers (like me) and perhaps Core One customers have no path forward. It probably is a smart business decision for Prusa. They can't keep dragging the existing customer base along every time they want to introduce a new product. All that energy and time should be devoted to innovation not servicing old machines. Businesses are not going to take apart and rebuild existing printers, they are going to write them off and purchase new. The home market will obviously suffer somewhat. Excited to see what Prusa comes up with next as long as it doesn't take 10 years and they shorten the time between announcement and delivery. Two months ago I became frustrated with the wait and lack of information. So I requested a refund and used the money to buy an Bambu X1C. My MK4/MMU and X1C have been happily tag teaming on printing projects. The X1C is a diva; requires more attention and has painfully slow color printing. The Mk4 is a heavy metal workhorse that hardly ever complains.
RE: Core One MMU3 Prototypes
I think you are. They are not going to come up with a new multi material solution and also a new printer. Given they just did a drastic change with the core one.
It will be the mmu that changes only and they will make it compatible with the core one, I am sure of that.
RE: Core One MMU3 Prototypes
I think you are. They are not going to come up with a new multi material solution and also a new printer. Given they just did a drastic change with the core one.
It will be the mmu that changes only and they will make it compatible with the core one, I am sure of that.
I agree. It's a new MMU solution that fits better on the the Core One design. Most likely a redesign of the MMU3 so it's more streamlined, or so it fits into a dry box solution 'neater'. The MMU3 still works, which keeps the existing user base happy, but Prusa should have thought about this and had a solution in the works alongside the design/development of the Core One. Instead it seems like they waited, realised the MMU3 solution of rte Core One didn't work as well as it did with the bed slingers, and have now gone back to the drawing board. So who knows how ling this will take.........
RE: Core One MMU3 Prototypes
The question is, if a brand new design comes out for the CORE One, what should I do with my leftover MMU3?
Indeed I owned a MK4S and a MK4+MMU3. I sold the MK4 alone and kept the MK4S and the MMU3 separated, waiting for the conversion kit AND to fit the MMU3 on top of it.
But now that Prusa has announced it, I'm not sure if I should sell my MMU3 quickly to avoid a significant future devaluation!
Of course, I would have sold the MK4+MMU3 together if I had known that Prusa was planning to break compatibility…
RE: Core One MMU3 Prototypes
You can still use the MMU3 with the CoreOne. You don't need to buy the new solution. Also, it will likely be a long time before that new solution sees the light of day.
RE: Core One MMU3 Prototypes
Like me, you can install the MMU3 on the CORE ONE: https://www.printables.com/model/1283543-prusa-core-one-mmu3-install-and-mmu3-setup
RE: Core One MMU3 Prototypes
Also, it will likely be a long time before that new solution sees the light of day.
First there’ll be a product announcement, then some time later there’ll be a pre-announced pre-order date, then a rush and a website crash, then a long wait till the last day of the promised shipping month, then a shipping batch system that you’ll be at the end of because of the website crash….
We’ve got plenty of time to make good use of our MMU3s before then.
RE: Core One MMU3 Prototypes
The question is, if a brand new design comes out for the CORE One, what should I do with my leftover MMU3?
Indeed I owned a MK4S and a MK4+MMU3. I sold the MK4 alone and kept the MK4S and the MMU3 separated, waiting for the conversion kit AND to fit the MMU3 on top of it.
But now that Prusa has announced it, I'm not sure if I should sell my MMU3 quickly to avoid a significant future devaluation!
Of course, I would have sold the MK4+MMU3 together if I had known that Prusa was planning to break compatibility…
I kinda did the same. Had my MMU3 working reliably with my MK4s. I then removed it from my MK4s, which I put back to stock, thinking I would move the MMU3 to my Core One. Now I don't want to put it on my core one until I have seen the 'new solution'......lol
I think I'll just put my MMU3 back on my MK4s.......
RE: Core One MMU3 Prototypes
Also, it will likely be a long time before that new solution sees the light of day.
First there’ll be a product announcement, then some time later there’ll be a pre-announced pre-order date, then a rush and a website crash, then a long wait till the last day of the promised shipping month, then a shipping batch system that you’ll be at the end of because of the website crash….
We’ve got plenty of time to make good use of our MMU3s before then.
This, is sadly more close to the truth than most would care to accept, or new customers realise. It's been a long couple of months realising that this is the way Prusa operate, and as another member has eluded to, its unlikely to change. Time will tell if my printer behaves itself upon building it, if not it'll be going back within the 60 day return window.
Scott
RE: Core One MMU3 Prototypes
Just order a laser cut plexiglass sheet with holes like the original one, so you can modify it 🙂
Yes Ive seen them - but I don't want to cut into my top cover......
RE: Core One MMU3 Prototypes
I was thinking the same mod. Do you have the files for laser cutting the top cover?
Just order a laser cut plexiglass sheet with holes like the original one, so you can modify it 🙂
Yes Ive seen them - but I don't want to cut into my top cover......