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Filament not moving through to bowden tube  

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niclas
(@niclas)
New Member

Hello,

Suddenly my filament "inlet" 1 won't accept filament. I can hear the motor start and feel it grabbing the filament, but after a couple of mm the motor starts jamming (sounds like jamming) and the filament stops moving. Then i have to either use gcode to get the filament backed out or use the eject button (although the filament is not even in the bowden tube).

The same filament loads fine in "inlet" 2 and loads all the way to the head. I've tried with other filament with similar results. According to the EEPROM I have 16 "Head hours". So I haven't used it a lot 😬 

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Posted : 27th September 2020 12:50 pm
BHudson
(@bhudson)
Former USA Robox Support Moderator

@niclas This is usually caused by one of two things:

1. Wet filament has broken off inside the extruder exit fitting.

2. The extruder has a worn or damaged gearset. With the low hours this is very unlikely, but we have seen a few units where the extruder is damaged and causes this issue.

My recommendation is to open a support ticket since you may still be under warranty and opening a support ticket will help protect your warranty. 

Otherwise, there is a tutorial on the support site that will walk you though removing and clearing blockage in the extruder. Please be aware that if you do this without an open support ticket and are instructed to do these steps on that support ticket, any damaged caused during the effort may not be covered under warranty. This is why I recommend a support ticket before you perform any disassembly of the printer. 

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Posted : 27th September 2020 11:50 pm
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