Extruder keeps jamming?
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beowulfkaine
- Noob
- Posts: 3
- Joined: Wed Nov 26, 2014 1:47 am
Extruder keeps jamming?
I'm having an issue that my exdruder jams up during warmup. Seems that it melts the abs before it prints. It's at 220. Any less and the filament won't melt enough to go throw the nozzle. I'm using a 5m nozzle and the stock extrusion speeds and feeds and no matter what I try it seems to always jam and the feed motor can't push the filament through the tube past the hot end. I know it's heating because I have to unscrew it to remove the clogged up nozzle. Any ideas?
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BenTheRighteous
- Printmaster!
- Posts: 695
- Joined: Fri Nov 07, 2014 9:38 am
Re: Extruder keeps jamming?
If you print at 230 does it still jam?
nitewatchman wrote:it was much cleaner and easier than killing a chicken on top of the printer.
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craftymethod
- Printmaster!
- Posts: 125
- Joined: Wed Aug 13, 2014 4:45 am
Re: Extruder keeps jamming?
Wow! 5 meter nozzle!!!
yeah.. funny enough thats the kinda issue im dealing with atm with PLA.
My strings of thinking:
-Bowden tube has too many curves (too much friction? -ive been trying 1.75 woodfill, it seems harder to push through the bowden tube)
-Extruder gets too warm due to it not moving enough (something about constant current, if it doesnt work the energy just turns to heat, but I guess with abs with a higher melting point than PLA I doubt that would be an issue?
-Too much air blown onto nozzle? I know that cooling your nozzle too much (I dont use a pointing down fan yet) can lead to issues in the nozzle.
-Alignment of the teeth on the metal wheel and the filament and the alignment of the extruder to the bowden entry?
-discrepancy between nozzle used and what the system "thinks" what nozzle is being used?
I share your pain. I almost have as many jams as I do sucsessful prints. Im trying to manage all these new things im learning!
do you early layers produce and stringing or "nodules" that drop over the place etc now and then? Kinda like a little excess drool etc... sometimes?
After some edits, I think my retraction is 3 or 4 and I find lifting my Z a lot helps with not pushing filament around and I think I seems to get less stops.
Im going to watch this thread closley
yeah.. funny enough thats the kinda issue im dealing with atm with PLA.
My strings of thinking:
-Bowden tube has too many curves (too much friction? -ive been trying 1.75 woodfill, it seems harder to push through the bowden tube)
-Extruder gets too warm due to it not moving enough (something about constant current, if it doesnt work the energy just turns to heat, but I guess with abs with a higher melting point than PLA I doubt that would be an issue?
-Too much air blown onto nozzle? I know that cooling your nozzle too much (I dont use a pointing down fan yet) can lead to issues in the nozzle.
-Alignment of the teeth on the metal wheel and the filament and the alignment of the extruder to the bowden entry?
-discrepancy between nozzle used and what the system "thinks" what nozzle is being used?
I share your pain. I almost have as many jams as I do sucsessful prints. Im trying to manage all these new things im learning!
do you early layers produce and stringing or "nodules" that drop over the place etc now and then? Kinda like a little excess drool etc... sometimes?
After some edits, I think my retraction is 3 or 4 and I find lifting my Z a lot helps with not pushing filament around and I think I seems to get less stops.
Im going to watch this thread closley