UPDATE: I will not be updating instructions on this thing much anymore. Instead I am building another Double Stack enclosure using parts from the Prusa Enclosure V2. This new thing will have better instructions and details. New version located here. https://www.thingiverse.com/thing:3711021
This thing is mostly just instructions. It does have one original printable part. The rest of the parts are just URLs (links) to other peoples work.
There are many LACK enclosure designs out there. Some of them provide enough room for the MMU2s but most do not. This one provides enough room for the printer, the MMU2s and 5 filament spools.
This thing is based off of V1 Prusa Enclosure design. https://www.thingiverse.com/thing:2864118
Saves time, space and helps dry filament
Saves Space: The universal auto spool rewinder saves a TON of space because I don't need the MMU Filament buffer. No need to run PTFE tubes all over a table or desk like spaghetti either.
Saves time: The filament buffer is so slow to load and setup. These auto rewinders are a lot faster to load up and feed filament into the MMU.
Heat is contained: Since the enclosure keeps most of the heat in that heat is used to dry out the spools inside the enclosure. So if you are printing with one or two filaments you can simply hang up a few more and let them bask in the heat for a while.
Updates to this thing:
10/4/2019. Changed out the old Filament management system for the new Hanging Spool & Buffer Shelf.
6/21/2019. I took a closer look at the new Prusa enclosure V2. I could rebuild this double stack enclosure with just using the new feet they designed. Three sets of those feet with two sets of hinges. I will need to make a new custom hing for the middle again. I am going to be building a new enclosure anyway so I will make the next one with these new parts. Stay tuned.
6/18/2019. Added the fifth Spool holder to the enclosure with pictures.
6/17/2019. Added a recommendation to use different arms for the spool hangers and added instructions with pictures how to arrange the spools hangers.
Also removed recommendations to detach the PSU since PRUSA no longer recommends doing that in their instructions.
6/14/2019 PRUSA announced their new version of an enclosure that can reuse the Plexi glass from their first version. I really like it. It is kind of techno gadgety. But in the end I decided that I like my double stack enclosure better. Keeping the filament inside the enclosure helps keep it dry and dust free. I also really hate loading the filament buffer they provide. I like the spool rewinders better. But for those of you who want to reuse the Plexi glass you have already cut for the original enclosure. Here is the new Enclosure by PRUSA. https://www.prusaprinters.org/prints/3673-mmu2s-enclosure
Full assembly instructions here - https://blog.prusaprinters.org/mmu2s-printer-enclosure/#_ga=2.163282748.1651285926.1560786468-264541980.1546877800
Materials to purchase
(25 - 35) coarse thread screws. I Recommend Hex Head screws for the enclosure and drywall screws for the hanging spool holders.
2x or more Ikea LACK tables. (I used 4 for extra storage)
2x 3M screws 15 mm long
2x 3M nuts (to replace the PSU with a printed brace)
3x Plexi-glass (or Acrylic) walls 86.04 cm X 44.13 cm X 3mm: (33 7/8" X 17 3/8" X 1/8")
2x Plexi-glass (or Acrylic) doors 86.04 cm X 22.06 cm X 3mm: (33 7/8" X 8 11/16" X 1/8")
[Yes 3mm or 1/8" thick will work]
A drill to start some screw guide holes.
super glue (to secure plexi into the hinges.)
Parts to Print 1: For the enclosure
Print two full sets of CameronMeek's "Original Prusa i3 MK3 ENCLOSURE Top Corners for Original Hardware" https://www.thingiverse.com/thing:2948686
Please note that you need two sets of the group print. You do not need any of the single pieces he has listed. (You will only need one set of his hinges.)
You will need one full set of the bottom pieces from cisardom, "Original Prusa i3 MK3 ENCLOSURE -Ikea Lack table - Prusa Research". https://www.thingiverse.com/thing:2864118 Please note you only need to print the group stl file called bottom pieces.
Also I strongly suggest you print this elbow for the heat bed wires. There are many like it on thingiverse but I think this is the best design. https://www.thingiverse.com/thing:3182594
Note: Prusa has a new 60 Degree angle adapter that may or may not be better.
Finally print 4 copies of the Double hing piece that I have created and listed here with these instructions.
Get the printer ready
Install the PSU brace and the head bed cable elbow using the instructions on their pages.
Then use the double ended screws and one of the Top corner sets to attach the first set of legs to the bottom of a table top. Don't forget to attach the TOP hinges as well. They are the smaller version. Use one or two flat screws to help hold the corner part to the leg.
Attach the second set of legs
Drill some small screw guide holes into the bottoms of the legs that you just attached. Now use the second set of top corner pieces. First you will attach them to the second set of table legs. Then you will gently screw them into the bottom of the first legs. add two of my double hinges to each side Be VERY VERY VERY careful with the hing pin. You can very easily tighten the two legs together too much and break the hing pin off with a twist motion.
Lock that corner piece into place with another flat screw.
Middle Leg connector with "Double Hing"
Real Middle leg connector. With tabs cut out to hold plexi-glass
Attach the bottom corners to the legs
Now use the set of corner bottoms on the bottom of the legs. Use screws to put them into place. Make sure you add the bottom hings.
Screw the cone shapes into the four corners of the next table top.
New Improved Filament Management System
Hanging Spool & Buffer Shelf
The new shelf is a lot better than the old system.
Much faster to change spools of filament
Spools are always balanced
Less maintenance to keep working
Easier to build
Less filament to create this system
Most important: MUCH MORE RELIABLE OPERATION
Follow this link to the description page.
New Hanging Spool & Buffer Shelf
OLD FILAMENT SYSTEM. NOT RECOMMENDED. Attach the Spool mounts
The old Filament management system used the Universal rewinders. Very difficult to build. Takes a lot of filament to make and hard to maintain and keep running.
Turn the top table upside down. Position the spool mounts so the rear of the mount is about 90 mm away from the table legs or the rear plexi glass. The 90 mm will give you enough room for most spools to spin freely. I chose to keep all of mine in a straight line. You can only fit four spools side by side.
There is enough room to add the fifth spool in front of the others but it will block the view and access to the main spools. I have not added the fifth spool yet in these pictures. But I will update the pictures after I do.
Four Spools with rewinders side by side.
Four spools inline
Added the fifth spool hanger
I decided to re position the middle two spool hangers. I moved them about 50 mm toward the back of the enclosure. Then I mounted the fifth spool hanger centered in the front. About 90 mm away from where the closed doors rest. This spool hanger is mounted backward. I am not sure if I like it but I am trying it out. Pictures below.
Fifth spool hanger mounted
All five spool hangers in place
Add Plexi Glass
You will need to cut out the tabs in the middle leg connectors. I used a razor blade. A dremel would work. (If someone wants to use Mesh mixer to remove the top of the tabs I will gladly link to your work.) After those tabs are removed you can fit the plexi glass into place for the 3 walls. Do not attach the plexi for the doors yet.
Now you can place the top table onto your bottom table. Go ahead and feed the power cable through the rear feet of the table at this time.
Now that the table is in place you can add the doors. I used super glue in the hinges to make sure the doors don't fall out.
I am not done with these instructions yet
More details to follow when I have more time. Ask questions in the comments and I will answer them.
I am just starting this new build
I have decided to build a second enclosure using the feet from the Prusa Enclosure V2. All you need is three sets of their feet. two sets of the hings that print with the feet and 4x of my new stl i uploaded to this thing. The V2 middle hing. I will update all the instructions later and archive these old instructions into a new thing.
Download the 3mf file from this link called "prusa_mmu_enclosure_1.3mf" Print three copies of this file.
Next week you will see the entire new build with instructions.
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