@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.

https://blog.prusa3d.com/massive-mmu3-speed-boost-new-fw-slashes-filament-change-times-core-one-l-mmu3-news_132957/

🧵 92/∞

#BlackLackStackHack #3DPrinting #Prusa #MMU3

@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/∞

#BlackLackStackHack #3DPrinting #Prusa #MMU3

@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/∞

#BlackLackStackHack #3DPrinting #Prusa #MMU3

@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/∞

#BlackLackStackHack #3DPrinting #Prusa #MMU3