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Thread: Idler wheel stops spinning
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08-06-2015, 07:21 PM #1
- Join Date
- Aug 2015
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- 31
Idler wheel stops spinning
I have a FFCP, had it about 2 weeks.
have about 20 or so hours on it.
I opened one of the spools that came with it the other day, (grey ABS)
and as i loaded the filament i noticed something odd. after a few seconds i would stop extruding.
after taking things apart and cleaning them, putting it back together and getting the same results, i ended up taking off the heat sink and watched as it extruded.
what i found was the idler wheel on the right (see attached pic)
will stop spinning. the stepper gear to the left it will keep spinning and subsequently chew up the filament.
I took things apart again, took the idler wheel out, put a dab of oil in it and put it back in.
same result.
i tried to tighten all the screws, loosen.. etc. same result.
I pushed up on the thump lever, there for putting more pressure on the wheel, and this made it extrude.
What i don't get is it was working fine, the spring still has plenty of spring.
I tried putting in black PLA and this did work okay, but as i watched it, i could see that wheel would occasionally pause, but then move again
i also noticed that whenever that happened the filament would move slightly.
I can freely spin this idler wheel with my finger, so it's not bound up in any way.
I measured the filament and it's 1.75mm
so i'm at a loss as to what is causing this and what i should do to fix it.
anyone have any thoughts?extruder.jpg
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08-06-2015, 10:12 PM #2
- Join Date
- May 2015
- Posts
- 39
Is your nozzle clogged? What temp are you extruding ABS?
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08-07-2015, 07:23 AM #3
Think about it: the idler wheel cannot stop the filament from being fed into the extruder. You either have a blockage in the nozzle (due to incorrect temps or an actual physical blockage) or filament is snagging on something in the filament feeder tube or on the spool.
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08-07-2015, 08:23 AM #4
- Join Date
- Jun 2014
- Location
- Burnley, UK
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- 1,662
I'll add one more.
The filament is too small in places, not likely but still something that can happen.
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08-07-2015, 12:05 PM #5
- Join Date
- Aug 2015
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- 31
I thought that may be the case, so what i did was cut a 3 foot piece of filament off and feed it by hand (no tubes, no spools)
and the same thing happened.
I took it out and ran black PVA through it. that seemed to work okay.
maybe it's the temp? I'm running it through @ 230C
if it was a clog then the black wouldn't work,
since i'm new forgive the n00b-ness.
is it possible to get "bad" filament?
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08-07-2015, 12:51 PM #6
- Join Date
- Jun 2014
- Location
- Burnley, UK
- Posts
- 1,662
New member with print issue
06-11-2024, 08:57 AM in Tips, Tricks and Tech Help