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Rat Rig Community [Unofficial]•13mo ago•

15 replies

Tetradecar

Hotend change, what I need to change in klipper and slicer? (Clogging Problem)

Hi there,

I changed my Dragonfly hotend to a Dragon HF hotend on my V-Minion. I installed everything and so far it has printed really well. Then after 10 hours of printing it clogged up twice. After googling around, I need to change the extruder flow parameter. But I don't know which parameter to change in RatOS and SuperSlicer/PrusaSlicer.

I found the flow rate test from Phaetus on github. It says that the printing flow increased from 15 to 31.5mm³/s and the extrusion flow from 46mm³/s to 62mm³/s.

I also checked the fan to see if it was running at 100% to produce enough airflow. It looks fine.

A hint in the right direction would be appreciate!
Greeting

Solution

From your description it sounds like heat creep, so you need to check the fan is spinning at the correct speed and make sure it is blowing across the hotend and not trying to pull air across the hotend. If all that checks out, get a different fan

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