RE:
I don't know much about MJF technology, but it seems like it mostly uses some type of nylon for its prints. That makes me wonder if Prusa determined that nylon was the best material for the main plate, and maybe printing a large number of quality nylon parts with FDM technology wasn't feasible?
I do have some Prusament PCCF though, and want to give it a try with the main plate as well.
RE: Printable components MMU3 for MK4
https://www.printables.com/model/531604-mmu3-printable-parts/files the STLs have been posted, they did actually include the Nextruder parts though they note that they should be printed with PC-CF
RE: Printable components MMU3 for MK4
https://www.printables.com/model/531604-mmu3-printable-parts/files the STLs have been posted, they did actually include the Nextruder parts though they note that they should be printed with PC-CF
Cool. PC-CF is recommended for most of the Nextruder parts, but it's interesting that for the main plate it says PETG is 'possible'.
RE: Printable components MMU3 for MK4
I see they're going to include a spare MJF main plate with the kits.
"Long-term testing has shown that this part performs best when printed using the MJF technology, therefore it is included in all packages (1+1 spare). However, an STL file will be available to download on the Printables. Using materials like PETG or PCCF is possible, but may significantly reduce the lifespan of the part."
RE: Printable components MMU3 for MK4
Hi I'm having an issue printing UNIT2 parts, not sure if anyone else has this problem but every time I try to print it it fails by moving complitly out of the the way on the 10 something layer, I tried printing the bgcode I tried to convert to gcode nothing helps, I already lost 2 prints and it's a bit annoying, does anyone have a good gcode for that without that error, couse I'm assuming the error is in the code as I printed already all other parts and just this one is giving me an issue. Can anyone help? Thanks 
RE: Printable components MMU3 for MK4
I'm really struggling removing the supports for the slots where the square nuts are supposed to go. Any ideas on how to do that or on how to print the parts better?
RE: Printable components MMU3 for MK4
MMU parts shouldn't need supports
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE:
Do not print everything at once, like UNIT2. Print the parts individually, they are all listed below in the sections by printer (MK3 and MK3+ or MK3.9 and MK4). If something happens, you will only lose one part. There is no need for supports anywhere, turn them off. Of course, you will have to re-slicing them according to the notes attached to the individual parts.