RE: Core One MMU3 Prototypes
No, but it should be easy to do it on any CAD software.
I’m waiting my kit, if no one has posted something until then I will do it.
RE: Core One MMU3 Prototypes
Ive talked with Customer Service, the file is not public. Will have to wait for the printer to be delivered
No, but it should be easy to do it on any CAD software.
I’m waiting my kit, if no one has posted something until then I will do it.
RE: Core One MMU3 Prototypes
Put me on the list for waiting.
RE:
Hey everybody!
As I see some questions, I want to join the discussion to give some insight😀
I now have incorporated a rewinding option, so you don't need a buffer in the first place, also, this makes loading soo much easier, and it can be done from the front.
As for the panel, you indeed need to go thru the top panel, but, there is a dxf file includes, where you can make a new one with the slot already in place. If you order the kit it already comes with this panel.
Regarding the venting;
There is quite a big space between the top of CORE one and the bottom of COREBOXX.
Since the sides also sit raised, and the surface area of these open sides is 3-4 times as large as the top vent itself, I did not find any issues with heat creep or high chambers temps when I don't want it.
RE: Core One MMU3 Prototypes
I'm very disappointed with the "solutions" presented by Josef and wonder what the developers have achieved between January and now, and what Josef is even willing to present.
"Prusa Solution" 1: The community uploaded the two customized mounting brackets to Printables months ago. This requires omitting the CoreOne cover. Printables already offers far more elegant solutions that route the PTFE tube through the Core cover.
"Prusa Solution" 2: Not really a solution. The bulky cover not only looks ugly, but it's also the one that was already presented as a "crafty" piece in January. Where is the development progress here?
"Prusa Solution" 3: Compared to the solutions already available in Printables (CoreBoxx and the like), the box presented is by far the most bulky, user-unfriendly, and resource-intensive version (approx. 5 kg of filament is required).
Outlook for Prusa Solution 4: End of the MMU3 in its current form. Prusa will likely then "develop" toward an AMS clone, which will take at least a year.
But loyal customers remain hopeful...
RE: Core One MMU3 Prototypes
As a customer that have a small mk3s+mmu3 farm that thinked about upgrade all of these mk3s to Core One, for me it's important the mmu3 feature.
I do not print "pla shit things" to sell it on etsy, I use the mmu3 to do multicolor and multimaterial printing on technical materials. I'm running a small business for car parts.
I'm running these mk3s with "V6mera" hotend that makes the MMU3 never fails and never suffer of heat-creep.
The actual situation of MMU3 "official upgrades" is.... you lost the capability of printing technical materials or some shit that makes the printer ridiculous big and unpractical.
Because the n*zi politics about prusa upgrades on original prusa printers you cant install unofficial mods on your printer or you lost your warranty (I suffered in the past) or support tell you all your electric problems were produced by some custom fan duct you installed.
At this moment I stopped the migration of mk3s to core one and thinking about bought mk3.5 upgrades and selfsort the nextruder upgrades with aliexpress parts+prusa ones, with this avoid the """"""""VFA FREE""""""""" steppers and convert to mk3.9
RE:
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.......
I printed the mounting rail from Daniel's model, swapped the top-right and top-rear frame rails on my CORE One, and screwed the mounting rail to the right side. Then I removed my MMU3 from my MK4 and offered it up.
It hangs nicely from the mounting rail, and with some longer PTFE tube the path from the MMU3 to the right-side filament sensor input is quite gentle and should work fine. Unfortunately the cable from the MMU to the electronics box is a good 30cm too short (maybe even 50cm if you want the MMU3 to hang near the front of the printer). I noticed in Josef's MMU video that one of the options will need a longer MMU cable, so I'm hoping I can buy just that cable and make the MMU3 work on the right side of my CORE One.
RE: Core One MMU3 Prototypes
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.......
I printed the mounting rail from Daniel's model, swapped the top-right and top-rear frame rails on my CORE One, and screwed the mounting rail to the right side. Then I removed my MMU3 from my MK4 and offered it up.
It hangs nicely from the mounting rail, and with some longer PTFE tube the path from the MMU3 to the right-side filament sensor input is quite gentle and should work fine. Unfortunately the cable from the MMU to the electronics box is a good 30cm too short (maybe even 50cm if you want the MMU3 to hang near the front of the printer). I noticed in Josef's MMU video that one of the options will need a longer MMU cable, so I'm hoping I can buy just that cable and make the MMU3 work on the right side of my CORE One.
I'd just take the whole top frame off and rotate it 90 degrees - in fact thats how I built the printer originally in my video guide! I only noticed later! Now I'm thinking I should have left it as it was! lol
RE: Core One MMU3 Prototypes
I'd just take the whole top frame off and rotate it 90 degrees - in fact thats how I built the printer originally in my video guide! I only noticed later! Now I'm thinking I should have left it as it was! lol
Well you're free to do it any way you like of course, but ...."the record shows I took the blows, and did it my way!" 🤣
(which is one screw fewer than your way) 🙂
RE: Core One MMU3 Prototypes
Yep, expecting it in time for the Core One S.
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
I'd just take the whole top frame off and rotate it 90 degrees - in fact thats how I built the printer originally in my video guide! I only noticed later! Now I'm thinking I should have left it as it was! lol
Well you're free to do it any way you like of course, but ...."the record shows I took the blows, and did it my way!" 🤣
(which is one screw fewer than your way) 🙂
You win! lol ;o)
RE: Core One MMU3 Prototypes
@jon-18
Because the n*zi politics about prusa upgrades on original prusa printers you cant install unofficial mods on your printer or you lost your warranty (I suffered in the past) or support tell you all your electric problems were produced by some custom fan duct you installed.
At this moment I stopped the migration of mk3s to core one and thinking about bought mk3.5 upgrades and selfsort the nextruder upgrades with aliexpress parts+prusa ones, with this avoid the """"""""VFA FREE""""""""" steppers and convert to mk3.9
well, now there are improvements. PRUSA finally said that braking the label to put custom firmware does not break warranty any more.
The MK3S was much more open to 3rd party supported product than the current printers. When I upgraded mine to MK3.5S, the first think I realised was that the original motherboard was gone... (it is still in a surplus box) and as result all the existing custom firmware were gone forever.I lost the compatibility with many many add-on on the market.
I have the REVO 6 so I did not wanted to throw it away with many expansive nozzles to use the Nextruder, so I did not took the MK3.9 option with the Nextruder, to stay with the "original" E3DV6 printer structure were I had installed the REVO6 with its own firmware.
Surprise surprise.... 🙄
I had installed the 60W HI-FLOW REVO heating cartridge expecting huge improvements with the new speed. But the reality was different: it just did not work, because while it was supported on the old Mk3S E3D/PRUSA Firmware, it was not on the new PRUSA MK3.5 board firmware.
Contacting PRUSA they said that they support just their own products (and may be correct) and since the machine is open source the 3rd party vendors that create any accessory for PRUSA product should take care of make it run and develop the custom firmware. Moreover they were unsure if powering a 60W cartridge instead of a 40W would have any impact on the power supply that was already at its limit and now it had to power the buddy board that takes more energy.
I contacted E3D and they say that developing a firmware for REVO6 on buddy board, a such new board (for them) would have required considerably resources and time, and it was not a priority, since they were focused on other their products.
I had no other chance than dismount the 60W it and reinstall the standard REVO 40W heating cartridge, that luckily was more or less supported.
So I suddenly wake up from a dream in which I could install whatever I wanted on a open source printer.
Yes, potentially I can, if I have the skills to write my custom firmware, or a vendor give me the FW with their product, but in the current market focused on low prices, and with the timing of the open source community that are often very slow, such prospective became less appealing.
So keep in mind this: if you have a system that works, think twice before screwing it up for something new that may be uncertain. Changing the stepper or any element will force you to write and maintain your own firmware. And by the way it seems that the VFA can be caused not only by the steppers but also by the belts and especially the bearings that PRUSA continues to make smooth and which should be toothed.
So now I have my MK3.5S with REVO6 (standard heating cartridge) that was more or less supported on the PRUSA FW and the MMU3 that was always installed on that machine and it works. I purchased also a MK4S that never changed to install the MMU3 on it since it works well without it. Now we got the CORE ONE. At the beginning I was thinking to take the MK4S->CORE ONE conversion kit, but then again the rule "never change what works" won and I got a basic CORE ONE KIT.
Regards
RE: Core One MMU3 Prototypes
Option 2 please
RE: Core One MMU3 Prototypes
What came first, the chicken or the egg?
This is what I see with PRUSA. They don't seem to have a holistic view of the product from the beginning. I see other companies' products are made in a certain way and remain that way for the life of the product. They (will) support all accessories from day one, as there are no updates or changes to the product other than simply attaching the new accessory. This has never happened with PRUSA.
PRUSA decided that every part can be reprinted and modified later, so the original design is limited and does not exceed certain limits.
Look at the MK3S and MK4S extruders. The development team put a lot of effort into the magnetic sensors to make it intuitive and easy to use, blindly ignoring that in the next room they were designing an MMU that was not compatible with what they were doing.
But who cared? Just redesign the extruder, reprint, disassemble and install. They are relying on people to be able to do it. But the more they become a mass-market company, the more problems they will have, because they will have type of customers who will not be able to use a screwdriver and will only want to 3D print, and will not be able to follow them in any future modifications or changes needed just to add an accessory.
Now CORE ONE: have they learned their lesson? No. They designed a good printer in optimised spaces, with the feed tube and the Nextruder sensors that work autonomously, and they released immediately it to the market. Again, they completely ignored the developers next door who had the MMU3 in their hands.
As a result, you can now see the mess when they are trying to fit together the printer and the MMU after designing them at different times. The spaces are what they are and when the CORE ONE was designed no one thought about how to fit the MMU, and now they don't know where to put it efficiently. Now they realise that the resulting CORE ONE+MMU is so unsatisfactory that they have to redesign the MMU from scratch.
And of course the design will be designed AFTER the CORE One design, and maybe once the product will be ready the CORE ONE will require major modifications to install it. And so on, in a loop.
This clearly shows that they still do not have a holistic view of product development, a mistake that would be extremely costly for their investments if they had mass production based on standard processes where components are produced quickly in thousands of pieces and the components should remain for the entire life of the product.
PRUSA should invest more in hiring specialised people in PRODUCT LIFE MANAGEMENT AND DESIGN.
So, what came first, CORE ONE or MMU?
Clearly CORE ONE, while both should have been born together in PRUSA.
Kind regards
RE: Core One MMU3 Prototypes
Amen.
RE:
I have a MK4S with the MMU3 so yeah I ordered the upgrade /conversion to Core One from the MK4S also in hope the Core One and MMU3 would be cohesive with out having to find users mods... well it don't appear that way anymore. So since delivery of the upgrade kit might be at the end of July I think I am just going to cancel the order and just keep my MK4S/MMU3 setup as is and maybe just use credit for spare parts and filament...lol and maybe just get another printer if I feel the need.
RE: Core One MMU3 Prototypes
Completely agree with this statement. They seem to try to bodge bits on afterwards and do not consider a 'complete' solution from the start. The below sums it up perfectly.
Now CORE ONE: have they learned their lesson? No. They designed a good printer in optimised spaces, with the feed tube and the Nextruder sensors that work autonomously, and they released immediately it to the market. Again, they completely ignored the developers next door who had the MMU3 in their hands.
RE: Core One MMU3 Prototypes
I almost did the same. I went for the full new kit in the end over the conversion, but I did remove the MMU3 and revert my MK4s back to stock as I planned to move the MMU3 to the Core One. Wish I hadn't now!
Do bear in mind though, that the MMU3 will work with the Core One, So you could still go ahead if you wanted as it is a good, reliable, system. It's not as though it's not compatible etc - it's just not the 'neatest' solution.
Personally I plan to put the MMU3 back onto my MK4s and leave the Core One as a single material printer for now. At least until I see what they come up with as the solution for the Core One. Annoying though. If waiting for shipping wasn't bad enough, we now need to wait for a decent MMU solution, with no ETA in sight!
I have a MK4S with the MMU3 so yeah I ordered the upgrade /conversion to Core One from the MK4S also in hope the Core One and MMU3 would be cohesive with out having to find users mods... well it don't appear that way anymore. So since delivery of the upgrade kit might be at the end of July I think I am just going to cancel the order and just keep my MK4S/MMU3 setup as is and maybe just use credit for spare parts and filament...lol and maybe just get another printer if I feel the need.
RE: Core One MMU3 Prototypes
Now CORE ONE: have they learned their lesson? No. They designed a good printer in optimised spaces, with the feed tube and the Nextruder sensors that work autonomously, and they released immediately it to the market. Again, they completely ignored the developers next door who had the MMU3 in their hands.
As a result, you can now see the mess when they are trying to fit together the printer and the MMU after designing them at different times. The spaces are what they are and when the CORE ONE was designed no one thought about how to fit the MMU, and now they don't know where to put it efficiently. Now they realise that the resulting CORE ONE+MMU is so unsatisfactory that they have to redesign the MMU from scratch.
MMU3 is known system which has it's dimensional requirements. It's not like they ignored it when designed the Core One. It always had mounting holes for MMU3 on the frame. They were probably testing Core One with MMU even before they announced Core One.
I don't understand what did you guys expect? In January they announced MMU3 for Core One. Not MMU4 or AMS-like system. Just good old MMU3 mounted on Core One. They have shown pre-production prototype. So everybody have seen how it will probably look and be mounted. Which they finalized and will be released as Enclosed version. And they said that they are exploring alternatives with like top mounted spools. From that we have extra Community version. And also extra Lite version.