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Sirllama
(@sirllama)
Active Member
Oozing

When printing molten filament starts to ooze up the heatbrak and in-between the heatblock and sink. I have tried EVERYTHING!!!!!!

When i reassemble it I put the nozzle in all the way and loosen it 1/2 - 3/4 of a turn screw in the heatbreak all the way and then tighten the nozzle to the heatbreak not the heatblock. IT JUST WONT STOP!!!!!

 

Please help I need it... a lot

This topic was modified 2 years ago by Sirllama
Posted : 06/02/2022 2:32 am
jsw
 jsw
(@jsw)
Famed Member
RE: Oozing

This is almost always due to a poor seal between the bottom of the heat break and the top of the nozzle.

Many people don't realize how much pressure is in there, and when under pressure, if there's any discontinuity, the pressurized molten filament will find it.

If there is debris on the bottom of the heat break or the top of the nozzle, it can prevent a good seal between the two.  It may require disassembly of the hot end to diagnose and clean it, if it persists after you are sure that you have a good solid contact between the heat break and the nozzle.

 

Posted : 06/02/2022 10:59 am
Robin
(@robin)
Prominent Member
RE: Oozing

Also make sure you do not over tighten the nozzle. It is supposed to be tightened with 2,5 NM only. If you exceed this torque you might damage the heat block and cause the leakage. 

If at first you don't succeed, skydiving is not for you.

Posted : 06/02/2022 12:15 pm
fuchsr
(@fuchsr)
Famed Member
RE: Oozing

It's obviously a misassembled hotend. Did you hot tighten the nozzle at 285 degrees? 

Posted : 06/02/2022 12:22 pm
fuchsr
(@fuchsr)
Famed Member
RE: Oozing

And once you've got it working again, print one of the 3 Nm torque wrenches at https://www.prusaprinters.org/prints/24539. They work great.

Posted : 06/02/2022 12:25 pm
Sirllama
(@sirllama)
Active Member
Topic starter answered:
RE: Oozing

yes

Posted : 06/02/2022 4:58 pm
Sirllama
(@sirllama)
Active Member
Topic starter answered:
RE: Oozing

I have a torque wrench so Ill use that when assembling it so i can make the 3d printed one

 

Posted : 06/02/2022 5:07 pm
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