ABS filament getting 'stuck' about 20 min into a large print. May 24, 2015 05:37PM |
Registered: 9 years ago Posts: 14 |
Re: ABS filament getting 'stuck' about 20 min into a large print. May 24, 2015 06:36PM |
Registered: 10 years ago Posts: 14,684 |
Re: ABS filament getting 'stuck' about 20 min into a large print. May 24, 2015 06:42PM |
Registered: 9 years ago Posts: 14 |
Re: ABS filament getting 'stuck' about 20 min into a large print. May 24, 2015 06:48PM |
Registered: 9 years ago Posts: 14 |
Re: ABS filament getting 'stuck' about 20 min into a large print. May 24, 2015 06:58PM |
Registered: 10 years ago Posts: 14,684 |
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stevemeetswest
Hi - thanks for the quick reply - it was definitely 'A' - some deformed/hardened ABS in the PTFE liner. I am a bit confused though if the issue is that it is heating up there when it should not - almost as if the heat is travelling too far back 'up' the barrel and melting more than it should?
Re: ABS filament getting 'stuck' about 20 min into a large print. May 24, 2015 07:55PM |
Registered: 9 years ago Posts: 14 |
Re: ABS filament getting 'stuck' about 20 min into a large print. May 24, 2015 08:16PM |
Registered: 9 years ago Posts: 1,873 |
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manually set it to be on
Re: ABS filament getting 'stuck' about 20 min into a large print. May 24, 2015 09:58PM |
Registered: 9 years ago Posts: 978 |
Re: ABS filament getting 'stuck' about 20 min into a large print. May 25, 2015 07:16AM |
Registered: 10 years ago Posts: 903 |
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stevemeetswest
I'm running the heat end at 240 with black ABS.
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stevemeetswest
What I found was a hardened piece of ABS in the 'PTFE' tubing, towards the end with the hotend, So somehow this area was hot enough for it to melt slightly and deform the ABS and this deformation widened the ABS in the tubing and kept the ABS from reaching it's destination in the hot end.
[swindon.hackspace.org.uk]
Re: ABS filament getting 'stuck' about 20 min into a large print. May 25, 2015 03:11PM |
Registered: 9 years ago Posts: 14 |
Re: ABS filament getting 'stuck' about 20 min into a large print. May 25, 2015 03:48PM |
Registered: 9 years ago Posts: 1,873 |
Re: ABS filament getting 'stuck' about 20 min into a large print. May 25, 2015 04:39PM |
Registered: 10 years ago Posts: 903 |
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stevemeetswest
The only thing I have changed that I didn't think would matter is the fan. I accidentally broke one of the blades and so I replaced the fan with this one:
[www.amazon.com]
Re: ABS filament getting 'stuck' about 20 min into a large print. May 25, 2015 04:47PM |
Registered: 9 years ago Posts: 14 |
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JamesK
Hi Steve,
exactly what happens when the filament fails to extrude? Does the extruder fail to turn (the stepper motor stalls & clicks, or maybe just stops without any noises) or does the motor keep turning and the filament slips? If you can push the filament through the blockage by hand then it suggests your extruder isn't producing enough force. If the motor stalls then you need to check the driver current - it might be too low and not generate enough torque (clicks) , or too high and overheating the driver (silent stop - I think, never actually seen it happen). If the motor keeps going but the filament slips then try tightening the tension adjustment screw to squeeze the filament harder.
What retraction settings are you using? You could try turning retraction off entirely as a test.
Re: ABS filament getting 'stuck' about 20 min into a large print. May 25, 2015 06:26PM |
Registered: 10 years ago Posts: 14,684 |
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stevemeetswest
Hi there, The motor turns and grinds on the filament.
Re: ABS filament getting 'stuck' about 20 min into a large print. May 25, 2015 09:46PM |
Registered: 9 years ago Posts: 1,873 |
Re: ABS filament getting 'stuck' about 20 min into a large print. May 26, 2015 12:33AM |
Registered: 9 years ago Posts: 396 |
Re: ABS filament getting 'stuck' about 20 min into a large print. May 26, 2015 02:50AM |
Registered: 9 years ago Posts: 978 |
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thetazzbot
I disagree with the Fan always on concept.
Re: ABS filament getting 'stuck' about 20 min into a large print. May 26, 2015 07:08PM |
Registered: 9 years ago Posts: 14 |
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JamesK
That's one thing I don't remember having read about - how do you judge how much tension to put on the extruder? What constitutes too much tension?
Re: ABS filament getting 'stuck' about 20 min into a large print. May 26, 2015 07:15PM |
Registered: 9 years ago Posts: 14 |