Fixed for now... but how long before it breaks again??? - General discussion, announcements and releases

RE: Fixed for now... but how long before it breaks again???

JeffL — Sat, 09 Dec 2023 01:05:59 +0000

Posted by: @ssill2
Makes me glad I printed all my parts in abs. But yeah that doesn't seem normal.

The part that melted was the factory part from Prusa. I did print the replacement in ABS

RE: Fixed for now... but how long before it breaks again???

ssill2 — Fri, 08 Dec 2023 21:27:53 +0000

Makes me glad I printed all my parts in abs. But yeah that doesn't seem normal.

RE: Fixed for now... but how long before it breaks again???

JeffL — Fri, 08 Dec 2023 21:25:19 +0000

Posted by: @michael-lew
OK.
My own MK4 has been remarkably reliable...

I love the print quality of the MK4... But I just don't understand why it always breaks in some way.

Yes, I do run the self diagnostics and it passes and run only Prusa Filament.

RE: Fixed for now... but how long before it breaks again???

Michael Lew — Fri, 08 Dec 2023 21:21:58 +0000

OK.

My own MK4 has been remarkably reliable...

RE: Fixed for now... but how long before it breaks again???

JeffL — Fri, 08 Dec 2023 21:20:43 +0000

Posted by: @michael-lew
That's strange then. How did the filament blob get to the heat-break? Was the heatbreak tube cracked?

Tube and nozzle are still usable, so not sure.

Pretty much anything that can go wrong with this printer does go wrong. I have to rely on my MK3 for long overnight prints now.

RE: Fixed for now... but how long before it breaks again???

Michael Lew — Fri, 08 Dec 2023 21:18:41 +0000

That's strange then. How did the filament blob get to the heat-break? Was the heatbreak tube cracked?

RE: Fixed for now... but how long before it breaks again???

JeffL — Fri, 08 Dec 2023 21:15:20 +0000

I am using this one that I purchased from Prusa

https://www.prusa3d.com/product/prusa-nozzle-brass-0-6-mm/

RE: Fixed for now... but how long before it breaks again???

Michael Lew — Fri, 08 Dec 2023 20:36:24 +0000

You seem to have all sorts of melty parts there. That's not normal. Are you operating the printer in a heated chamber or is that melting from contact with the blob of oozed filament?

The white melted filament coming out of the top of the heater block means that you are not using the standard Prusa nozzle for the printer because that has a continuous metal tube that goes much further up. If you are using the V6 adaptor then it seems that you may not have adequately heat tightened the nozzle in place.

RE: Fixed for now... but how long before it breaks again???

Zappes — Fri, 08 Dec 2023 07:58:36 +0000

What kind of a nozzle were you using there? I mean, was it one of the long Nextruder nozzles or the V6 adapter and a V6?

Fixed for now... but how long before it breaks again???

JeffL — Fri, 08 Dec 2023 05:20:15 +0000

about $100 and a few weeks later, i got my MK4 fixed. i just wonder how long it will last until it becomes a hot piece of garbage again. I am thankful that my Prusa MK3 and Prusa MINI are rock solid printing machines to print replacement parts for the MK4 that maybe prints 1 out of 100 good prints.

UGH.

BEFORE:

AFTER:

New piece printed to replaced melted part

Everything assembled, ready to print (crossing my fingers)