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03-03-2016, 01:58 AM #2
- Join Date
- Sep 2014
- Location
- Brummen, Netherlands
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- 265
I have had this problem with a chinese E3D clone also with a Bowden extruder. Due to the bowden tube I needed around 6 mm retraction to counter the oozing. However, which such high retractions, hot rubbery filament is pulled up too high and then cools and sets higher up in the heat throat causing a jam (it sticks to the metal wall). My solution was to convert the all metal heat-throat for a ptfe lined one, which solved my problem completely.
My personal conclusion is that for an all-metal hotend you either need to be lucky with respect to the heat-throat (seems to be a hit and miss issue), or you need a direct drive (no bowden) extruder so that you can keep the retractions to less than 2mm.
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05-20-2024, 12:56 AM in Tips, Tricks and Tech Help