#Constant clogging of the heat break

1 messages · Page 1 of 1 (latest)

stone mulch
#

I am using an ender3 v3 se printer. I have problems with constant clogging of the heat break, or more precisely, the PTFE tube that is placed in it. It gets clogged in such a place that after heating, the filament does not melt and I have to disassemble the entire hotend to replace the PTFE tube in which the filament is stuck. I replaced the tube, radiator fan, heat break, nozzle, and even lubricated the heat break with thermal paste where it was in contact with the radiator to transfer heat better. I use nebula pla fancy and sunlu pla matte filaments and the same thing happens on both. I use cura slicer and print at a temperature of 200-210 degrees, with a retraction of 0.3-0.6 mm, a retraction speed of 15-25 mm/s^2, and a layer height of 0.1 mm. I did not make any modifications to the printer.

hexed heathBOT
#
AI Help

It sounds like you've already taken various steps to address the clogging issue. Here are a few additional suggestions to consider:

  1. Check Filament Quality: Ensure that the filament you are using is of high quality and not excessively brittle or prone to breaking inside the tubing.

  2. Filament Diameter and Tension: Confirm that your filament diameter settings in the slicer software match the actual filament diameter. Incorrect settings can lead to extrusion issues. Also, check the filament spool tension to prevent binding or excessive drag on the filament as it feeds.

  3. Hotend Assembly: Make sure the hotend assembly is properly assembled with all components securely in place. Check for any potential gaps or misalignments that could cause filament blockages.

  4. Heat Creep: Monitor for signs of heat creep, where heat travels up the heat break and causes filament to soften prematurely. This can be caused by inadequate cooling or improper temperature settings.

5....

WARNING: This response is AI generated and may contain errors.
sudden fiber
hexed heathBOT
#

Hottightening the Nozzle

Tighten your nozzle at the highest possible temperature to make sure it fully seals against the heatbreak.
If the nozzle bottoms out against the heatblock, the heatbreak is not installed correctly. Refer to the graphic. Note that the maximum printing temperature is about 20C lower.

If you have a PTFE lined hotend, make sure you have taken care of ?thegap

?hottighten requested by: m.von.d#0