Orginal Prusa Enclosure with MMU2S  

RE: Orginal Prusa Enclosure with MMU2S

I also received my enclosure on Friday and assembled it over the weekend and noticed the lack of supporting documentation for the MMU2s. So I too am interested in some updated assembly instructions specifically for MMU2s, which I assume are coming in the following weeks. Specifically on the following topics:

• Installation. The unit with MMU2s fitted doesn't fit through the door, so needs to be detached and then reattached when inside. The same will be the same for removing the printer.
• Spool positioning. The mods collection already includes left and right attaching printable spool holders. However, filament guide A and B (Printable Parts) aren't symmetrical, so a mirrored version needs to be released so it can be attached to the left of the enclosure.
• Filament buffer. We need to know what we need to print and where we can install the filament buffer so that it is easily accessible. Also, with the current position of the printer, the PTFE tubes aren't long enough to comfortably route from the filament guide mounting point to the back of the MMU2s. This currently omits the buffer as I needed to get the printer printing.
• Maintenance. As the OP stated, maintenance is crucial for the MMU2s to allow cleaning of the selector's teeth and any filament ends that fall into it. As it stands, it is very cumbersome to access the MMU2s while in the enclosure, and this will be made more difficult with the buffer in there too. 

Coming from the v2 Lack Enclosure, losing the ability to lift the lid for easy access is a downgrade for this new enclosure, and as such MMU printing is extremely difficult currently.

RE: Orginal Prusa Enclosure with MMU2S

So I've had time to think on this and today I removed my MMU2S and if I position the unit over the center slot on the top of the enclosure I'm able to just get the cables to reach the enisy board but that still leaves the issue of getting the filament down to the extruder.

While I admit the reason I purchased was it was advertised to "fits the MMU2S upgrade" I was excited to give it a go but at the moment I don't see how this is possible.

Has anyone seen any communication on how this can get setup?

RE: Orginal Prusa Enclosure with MMU2S

I am in the same boat with my MMU2S.  I am currently considering alternative mounting locations to make much needed maintenance easier. I will post any eureka moments I have here.  I did speak with Prusa reps just after assembly about their timeline on publishing specific instructions for assembly/use of the MMU2S with the enclosure and was told about 2 weeks.  This was a little over a week ago.  I love Prusa, but hitting deadlines has not been their strong suit with the current resource procurement climate that they are in.  Hopefully they wont be 2 far off and that release will accelerate the conversation here.  Putting that out there just in case anyone seemed discouraged by the absence of any information from Prusa regarding the Enclosure/MMU2S cohabitation.

I am encouraged by the amount of real estate available on the top of the enclosure and am currently snaking my PTFE tubes through the port on the top near the rear and going to individual spools on top.  This only works because rather than the supplied buffer I use a pulley style buffer that I designed over the winter.  Each spool has its own pulley buffer so spools can be oriented anywhere on top that the tubes can reach.  The system currently works great but since the components are all adapted from my previous layout they are not pretty in their current configuration.  If no alternatives present themselves I will update my files for them, post them on Printables, and link back here.  My current thoughts for MMU2S placement is to make a mount for it that attaches it to the ceiling inside the enclosure.  It’s location would essentially be in front of the printer  oriented so the 2 top screws are easily accessible. This translates to rotating it 180 degrees on 2 axis’ so that its front is in the back and its bottom is at the top.  This creates a problem with seeing the indicator lights and anything else on the front.  I was thinking of incorporating magnets into the mount so it can be easily removed for maintenance.  I am also not sure on the wire routing so I don’t know if this is even feasible without extensions.  That’s where I am currently.  Don’t be a stranger if anyone finds anything out or comes up with a great fix.   

RE: Orginal Prusa Enclosure with MMU2S

I've been trying out lots of different options for the MMU2S in the enclosure. I really do think the best way to fix this is to make the top able to swivel up. Removing the top plate and placing it on top of the enclosure would just requires some printed parts and doesn't seem to affect the overall stability of the enclosure. I tried having everything mounted outside (spools, buffer, MMU unit) but it took up a lot of room, the replacement tubes were just too long, and it was generally too much to deal with. If the top can hinge up, I can place the buffer right underneath it and can easily access the MMU unit for cleaning. All this is just going to require some printed parts. It would be super-awesome if we could ditch the buffer entirely and have auto-retracting spool holders instead. That would really clean up the whole setup.

RE: Orginal Prusa Enclosure with MMU2S

I use this for my spools.  Now that I got the MMU2S setup on top of the enclosure I need to figure out placement of the spools but this can help you move away from the buffer.

https://www.printables.com/model/10370-gravity-spoolholder-for-mmu2s

RE: Orginal Prusa Enclosure with MMU2S

Prusa have recently added an add-on to the Enclosure instructions for a hinged top lid

So with this accessing the MMU will be much easier and I can't imagine it hinders the strength of the enclosure much

RE: Orginal Prusa Enclosure with MMU2S

Additionally, steps 5-9 seem to be preparing the enclosure for a future add-on specifically for feeding the MMU from outside the enclosure.

So there are definitely plans in place for the MMU, considering all the non printed parts for this add-on were in the kit already.

RE: Orginal Prusa Enclosure with MMU2S

Nice.  I just got started on the printed parts for this.  Still need to find a way to manage my spools but this will make things easier going forward.

RE: Orginal Prusa Enclosure with MMU2S

I have just installed the hinge kit. Works well. Be careful to not over tighten the 2 bolts on the handle which screw into the lid. I have sheared off the raised thread rivet. Will glue them back in place

RE: Orginal Prusa Enclosure with MMU2S

Quite happy with the setup.  Now I got to plan how to setup my spools to work best.  I'm thinking of moving my setup away from my desk so I can turn it 90° and have the spools setup behind the enclosure and see how well that works.

RE: Orginal Prusa Enclosure with MMU2S

Posted by: @jason-6

I have just installed the hinge kit. Works well. Be careful to not over tighten the 2 bolts on the handle which screw into the lid. I have sheared off the raised thread rivet. Will glue them back in place

 

 12918E66-5399-4CEB-AE7D-7D515A0F7012.jpeg

Can confirm this happened to me too.  To fix it I used superglue with vice grips to hold the piece in place while the glue was setting.