Filament jam

instasquid · Post by **instasquid** » Tue Nov 12, 2013 9:32 am

I'm getting a problem where the filament jams constantly. I've tried cleaning the extruder, hell I even purchased a new extruder, but the same thing is happening. The PLA feeds, then the stepper motor starts to 'jump' [makes 'chug chug chug' noises] and can't push the PLA any further.

Any ideas what I can do to fix this?

Mayhem · Post by **Mayhem** » Tue Nov 12, 2013 1:07 pm

Does the upper fan work?
Supply 12v to the upper fan.
Does your extruder motor have enough power?( motherboard has potentiometer for power adjustment)
Dont but too much torque on the filament tension screw.

instasquid · Post by **instasquid** » Wed Nov 13, 2013 5:27 am

Upper fans are working.
Extruder motor used to work, this problem is recent.

I can get my filament through most of the way, here's a photo of it once I've reverse the feed and removed it: http://i5.photobucket.com/albums/y170/l ... roblem.jpg

Any thoughts? I've had a lot of trouble trying to get this printer to print. I feel like I'm so close, but it's driving me crazy.

satoer · Post by **satoer** » Wed Nov 13, 2013 9:49 am

Does it jam if you adjust the retract setting to 0?
(SFACT => Configure => Dimension => Retraction distance)

Mayhem · Post by **Mayhem** » Wed Nov 13, 2013 9:56 am

Hmm, did you change your filament recently? Measure the filament diameter, it needs to be close to 1.75.

Mayhem · Post by **Mayhem** » Wed Nov 13, 2013 9:59 am

I have v3 hotend and i havent got zero jams/glogs since i swapped the hotend to v3.

instasquid · Post by **instasquid** » Wed Nov 13, 2013 12:35 pm

Satoer: Yes. Even with Retraction Distance on 0 it jams. It always jams at around 50-60mm of feeding the filament through. [I'm using 10mm incraments so it stops quickly if there's a problem]

Mayhem: Yup. It's 1.75mm filament. Happens with the filament that came with the printer. I have yet to get one successful print, but I have gotten prints out of it before which means the plastic works. It's only recently stopped going through the extruder. I also bought a second extruder [both v3] and it stopped working after the 3rd or 4th attempt at printing. So I now have 2 extruders neither of them work.

JTa · Post by **JTa** » Wed Nov 13, 2013 2:07 pm

And you're sure the thermistor is ok? I had similar problems but those are gone now after I switched to another thermistor model.. Check the heat of the hotend with some external thermometer.

instasquid · Post by **instasquid** » Thu Nov 14, 2013 6:43 am

JTa: I have an infrared thermometer which says the tip of the hotend is only 95C instead of 195C. So that seems a likely culprit. Thanks!

What do I do to fix the termistor?

Mayhem · Post by **Mayhem** » Thu Nov 14, 2013 12:18 pm

Buy new one:)

Filament jam

Filament jam

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