#mmu3 — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #mmu3, aggregated by home.social.
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@3dprinting Two months later, the new spool holder uprights in 🧵90 and 91 are a solid improvement.
But today was a long sequence of MMU filament loading errors. I tweaked this and that, but the problem just moved around. I finally cleaned the inside of the MMU3 and the Nextruder, and I'm a hundred filament swaps or so into a print without incident. 12 more hours on this print...
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@3dprinting Finally, I upgraded my MMU3's firmware. Prusa released MMU3 performance improvements last week; that's a nice bonus for a printer that's 4 generations old.
🧵 92/∞
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@3dprinting The original took too long to assemble, with 20 screws. This one snaps together.
I made a compliant bushing to hold it onto the aluminum rails inside the drybox. I'm not sure that was an improvement. It does hold snugly, though.
🧵 91/∞
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@3dprinting While I was there, I decided to replace one of the auto-rewinder spools that had cracked in the last few months. And then I decided to redesign the spool holders. I'd always thought it should be easier to insert a spool.
So I came up with this design. The tall post behind the spool makes it so you can't (easily) push the spool past the slot. Just push it up against the post, then drop it into the slot.
🧵 90/∞
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@3dprinting 49 days ago, my printer's hotend fell out. I wrote about it here.
This week I finally repaired it -- travel and procrastination... The repair was straightforward; the hard part was cleaning off my workbench so I had room to work on it. 😒
https://chaos.social/@kbob/116063218020236097
🧵 89/∞
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The basic #Prusa #CoreOne build is done! Had a few issues with heat sensor wiring (me being an idiot and flipping two cables) and the Z-axis making loud scary sounds and getting stuck. Wires were switches around, bed mounts were loosened and retightened and now it seems to be working. Right now it's doing the fastest and most aggressive #Benchy print I've ever seen. In lipstick red no less. It's pretty awesome to see something you assembled yourself work so flawlessly.
When I say basic, it's because this printer has some way to go still. I'm mounting an #mmu3 and a top filament box. Forgot the name of it, but I'll post an update. Probably not until after Christmas.
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I printed a thing. Just a gift box, based on something I saw on Printables. It has some junk in the lettering, but it'll do. It has a live hinge that will probably survive about 10 uses before the PLA cracks.
To make the rough-cut page edges, I used both geometric ridges and fuzzy skin with a very long point distance -- 40 mm.
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It's printing !
PRUSA CORE one with MMU3, advanced filtration and built-in camera. Luxury of a 3d printer 🥰🥰🥰.
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@3dprinting I published the box to printables.
As the Marketing Department of the Sirius Cybernetics Corporation say, "Share and enjoy!"
https://www.printables.com/model/1255222-custom-gift-box-for-anatomic-heart-and-stand
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@3dprinting And now I have a parallelogram shaped gift box. This is becoming my standard gift box: fitted insert, lid with bow printed on. This was only challenging in that the heart is too complex to import into Fusion360 as an STL.
The blue and red ribbon is the same filament as the veins and arteries. The lid is the same as the stand.
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@3dprinting I printed some stands. (The stand is on Printables among the remakes of the model I posted above).
The left two are Overture Rock White PLA with fuzzy skin with a Bambu Iron Gray Metallic PLA cap (not fuzzy). The right two are all Iron Gray Metallic (not fuzzy).
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@3dprinting It finished! And one of these hearts will make a very nice gift.
56 hours all told.
No further interventions needed today.
My MMU has done a lifetime total of 10,508 filament changes now. 1,678 of them in this print.
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@3dprinting I adjusted the height of the FINDA (MMU filament sensor) at 50% complete, and it hasn't needed intervention since. (Knock on woodfill PLA.)
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Love this stupid machine. #3dprinting #prusa #mk4s #mmu3
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Now I've gone into mass production of gift boxes with little snowmen on them. These contain flask-sized bottles of maple syrup. Modeling around the flask shape was fun. This time I printed the carrot noses separately and glued them in, rather than do manual color changes or settle for five colors.
PolyTerra "Fall" gradient matte PLA for the box.
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@3dprinting Now I have storage for various print bed sheets.
This is the Expandable Steel Sheet Holder by Whity, upside down because I'm left handed.
https://www.printables.com/model/51462And the printer plays on.
🧵 88/∞
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@3dprinting I lifted the drybox up on stilts. While it was feeding filament to the running printer. Now there's 62mm of clearance under the box.
Upthread in 🧵 66 I showed how the drybox is removable. It still is, it's just closer to the stratosphere.
🧵 87/∞
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I've made one mount for my SKÅDIS pegboard now. I think this is going to be the color scheme: matte blue mounts, gold labels, and green ASA hooks. Varela Round for the label font. (Red wrenches are not part of the color scheme. The next tools will be yellow and blue-green.)
I used Kim-Janosch's hooks rather than invent my own.
https://www.printables.com/model/635711-skadis-mount-collectionYes, you can use an MMU for functional prints.
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I printed this. I downloaded a line drawing from a coloring pages site, massaged it in Fusion 360 and PrusaSlicer, then edited the .GCODE file to insert filament changes. It has six colors; MMU3 only supports five, so I switched in the sixth color manually.
I used ironing and different infills to add more variation to the colors. See the Alt Text for details.
And I still don't know what that white thing at the lower left is supposed to be.
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@3dprinting The wipe tower is horrible, but the print is just fine with just one bit of excess filament stuck to it. Still, I do not recommend this technique.
🧵 13/N
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@3dprinting What happens when the wipe tower comes loose from the build plate? I noticed in time and held it in place for the last 8 filament changes. Amazingly, the print survived.
🧵 12/N
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@3dprinting Upthread in 🧵 84 I said that sometimes the filament tube inlets come off. I've addressed that issue by creating bendable clips that hold the inlets in place. Tool-free, of course.
These photos also show the six-to-five adapter. The (Un)original Prusa Drybox is designed for six spools. The MMU3 uses five. So I made an adapter. (It's a refinement of a similar adapter seen here. https://www.printables.com/model/702217-mmu3-mmu2s-5-spools-auto-rewinder-adapter-for-unor/files)
🧵 86/∞
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The bad:
- Full spools have enough angular momentum on retractions that sometimes they pull the tube inlets off. Then the filament wraps around the axle.
- The tubes in the back are free and floppy and not parallel. (aesthetic)
- The back panel is flimsy. It's corrugated plastic, and it bends a lot when removed.
🧵 84/∞
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The good:
+ Filament is easy to load. The tube inlets are right up front, no need to reach behind the printer or feed through a buffer.
+ It works fine whether the enclosure lid is closed or tilted up at a 45° angle.
+ Everything disassembles pretty easily with no tools required.
🧵 83/∞
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@3dprinting Here's how the roller comes apart. (There is voiceover in the audio.)
🧵 82/∞
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@3dprinting Upthread in 🧵 69 through 72, I discussed options for passing through the back wall. @esden and @Siff advised.
The tubes go through a roller that lets them rotate together. The roller is clamped between the black surround and the black/orange panel.
For disassembly, the panel pops off, the roller lifts out and the whole back panel can be pulled away. The roller splits into two halves after the bearings are pulled off.
🧵 81/∞