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

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

  RSS
JeffL
(@jeffl)
Eminent Member
Fixed for now... but how long before it breaks again???

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)

This topic was modified 3 months ago by JeffL
Posted : 08/12/2023 5:20 am
Zappes
(@zappes)
Estimable Member
RE: Fixed for now... but how long before it breaks again???

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?

My models on Printables
Posted : 08/12/2023 7:58 am
Michael Lew
(@michael-lew)
Trusted Member
RE: Fixed for now... but how long before it breaks again???

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. 

Posted : 08/12/2023 8:36 pm
JeffL
(@jeffl)
Eminent Member
Topic starter answered:
RE: Fixed for now... but how long before it breaks again???

I am using this one that I purchased from Prusa

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

 

Posted : 08/12/2023 9:15 pm
Michael Lew
(@michael-lew)
Trusted Member
RE: Fixed for now... but how long before it breaks again???

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

Posted : 08/12/2023 9:18 pm
JeffL
(@jeffl)
Eminent Member
Topic starter answered:
RE: Fixed for now... but how long before it breaks again???

 

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.

Posted : 08/12/2023 9:20 pm
Michael Lew
(@michael-lew)
Trusted Member
RE: Fixed for now... but how long before it breaks again???

OK.

My own MK4 has been remarkably reliable...

Posted : 08/12/2023 9:21 pm
JeffL
(@jeffl)
Eminent Member
Topic starter answered:
RE: Fixed for now... but how long before it breaks again???

 

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.

 

Posted : 08/12/2023 9:25 pm
ssill2
(@ssill2)
Noble Member
RE: Fixed for now... but how long before it breaks again???

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

Posted : 08/12/2023 9:27 pm
JeffL
(@jeffl)
Eminent Member
Topic starter answered:
RE: Fixed for now... but how long before it breaks again???

 

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

Posted : 09/12/2023 1:05 am
ssill2 liked
Share: