Different color streaking and blobs after swapping HOTEND
 
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Different color streaking and blobs after swapping HOTEND  

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Luc Delisle
(@luc-delisle)
Member
Different color streaking and blobs after swapping HOTEND

Printer went bad months ago, Nozzle jammed up + hotend and Extruder assembly base filled up with molten PLA.  Swapped out the Hotend and Nozzle and cleaned up the base as best I could.

Was able to get new hotend, 1st layer setup perfectly.   My issue is that while printing marble pla, the printer spits out some streaks of black PLA and also send a 1/8 inch blobs of black PLA that will create a crash detection fault.    

Do I just continue printing until the bad stuff clears out or should I replace the whole Extruder assembly ?

.6mm nozzle

.20mm layer height

This topic was modified 1 month ago by Luc Delisle
Posted : 16/10/2024 11:31 pm
Diem
 Diem
(@diem)
Illustrious Member

I suspect molten plastic is running down from the top of the heater block.

When changing the hotend & nozzle did you pay particular attention to the diagrams at the bottom of this page:

https://help.prusa3d.com/en/article/changing-or-replacing-the-nozzle-mk2-5s-mk3s-mk3s_2069

Cheerio,

Posted : 17/10/2024 12:08 am
Luc Delisle
(@luc-delisle)
Member
Topic starter answered:
RE: Different color streaking and blobs after swapping HOTEND

Seems to be clearing itself out by simply after staying close to the printer, monitoring blobs and removing them before a crash detection.   No more color streaking after hour 2 and lots less blobs

Posted : 17/10/2024 12:59 am
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