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MK4 + enclosure + MMU3  

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Turbotrix
(@turbotrix)
Active Member
RE: MK4 + enclosure + MMU3

While back I bought aftermarket enclosure very similar to prusa but with a lot of extra features including lock filtration system etc it's made by Fystec... Honestly the quality is phenomenal. I'm about to build the mmu3 and enclose my MK4.. still looking for solution as far as mounting

Posted : 24/04/2024 2:24 pm
PH1NB
(@ph1nb)
Active Member
RE: MK4 + enclosure + MMU3

Hmm, looks like the fire extinguisher tube, which is mounted on the underside of the lid, prevents mounting the buffer kit. 

Posted : 24/04/2024 2:27 pm
Fred in Houston
(@fred-in-houston)
Member
RE: MK4 + enclosure + MMU3

 

Posted by: @chris-hill

Maybe the mounting brackets in my mounting kit can help.

Posted by: @garlicgnome

Hope there will be a usefull Solution for the Buffer - currently i just laid it onto the Hinged Lid while Using the (un)original Drybox

This is exactly what I was referring to in my prior post. Glad to see you posted. I’ll be using your setup once I get my kit next week. 

Posted : 24/04/2024 2:30 pm
Chris Hill
(@chris-hill)
Estimable Member
RE: MK4 + enclosure + MMU3

I'm now using the same brackets to mount the buffer on top of the lid, rather than on the underside.  But does the fire extinguisher use the same holes?

Posted by: @ph1nb

Hmm, looks like the fire extinguisher tube, which is mounted on the underside of the lid, prevents mounting the buffer kit. 

 

Posted : 24/04/2024 2:30 pm
PH1NB
(@ph1nb)
Active Member
RE: MK4 + enclosure + MMU3

Not sure, but please see attached photo. I always figured that the rectangular cutout in the middle of the lid was ment for some form of dry box PTFE cable passtrough, and then to the MMU3.. I like your idea of mounting the bracket on top, I will have a look. 

Posted : 24/04/2024 2:39 pm
Chris Hill
(@chris-hill)
Estimable Member
RE: MK4 + enclosure + MMU3

Yes, the fire extinguisher tube does indeed use the same holes as my mounting brackets.  But if the buffer is mounted on top, I see no reason why the brackets and the extinguisher couldn't share the same holes.  Worst case, you might need screws that are a few millimetres longer than the supplied M3x12 - the heads would fit in the nut recesses that I've included in the brackets.

Posted : 24/04/2024 3:09 pm
schesnutt
(@schesnutt)
Member
RE: MK4 + enclosure + MMU3

I received my MK4 MMU today. I have the MK4 installed in the Prusa Enclosure with the Power Supply and Display mounted outside.

Where did you get the spool storage / drybox? 

Any suggestions other than a hinged lid?

Posted : 24/04/2024 9:06 pm
vhubbard
(@vhubbard)
Estimable Member
RE: MK4 + enclosure + MMU3

 

Posted by: @atlasrearden

Any update on this topic? Will the MMU3 fit in the enclosure with the MK4?

 

Update on my notes.   MMU3 same size as MMU2   If  MMU3 mounted the Prusa way, no problem fitting in the enclosure.    If you are using squash ball feet or a paving stone under the printer, it depends on the style and how much height it makes.    If the MMU2 fit, the MMU3 will fit.  

If wanting to mount the MMU3 buffer in the enclosure see above comments.   

There is an MK4 quick disconnect now.   

I have moved the screen to the outside of the enclosure.  There is enough cable if you route the screen cable more straight than following the frame. 

The MMU3 buffer has only a little size difference vs. the MMU2 buffer.  The change is all the PTFE tubes enter/exit from the same side now.  With Cassette loading.  I still have it oustide the enclosure currently. 

The stock MMU3 legs will mount the MMU3 the same as the MMU2.   The new legs let you put it horizontal for maintanence, but not for running.  

 This is a preference, not mandatory.  If you want the MMU to run Horizontal this is where it gets fun.   See my MK4/MMU3 notes for all the details with measurements and links to the horizontal mounting legs.  Mounting horizontal you have to make sure the MMU3  will clear the Nextruder, MMU3 mount is taller when horizontal, but still fits if the printer has not been raised by paving stones, squash ball feet etc.   The Super Finda wire is the highest part of the MMU3 when mounted horizontal. 

There were mods for mounting the MMU2 control board under the MMU for visibility and access.  Mounting the MMU3 control board UNDER the MMU3 is not supported and probably not recommended because of EMI concerns Prusa found along the way.  Would have to re-invent their EMI fixes to change how it is mounted. 

 

Posted : 10/05/2024 12:55 am
Fred in Houston
(@fred-in-houston)
Member
RE: MK4 + enclosure + MMU3

I’m very close to being 100% done with my setup. I’m using Chris Hill’s mounting bracket under the lid and his filament guides. I put my 5th spool holder in the back right corner. 

All I have left to do is actually wire the plug from the MMU into the buddy board and I should be ready to go. 

I also bought molex plugs and pins and will likely make my quick disconnect plug for the power supply. 

I’ll post detailed pics of everything when I have it like I like it. 

Posted : 10/05/2024 1:11 am
dotwinX liked
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