extruder not pulling enough filament

alang
Posts: 10
Joined: Mon Oct 24, 2016 7:06 pm

Re: extruder not pulling enough filament

Post by alang » Sat Jan 14, 2017 8:47 pm

Had exactly the same problem and fixed it today with 2mm packing. Now works fine. Wish I'd seen this post two weeks ago!

dong_jason
Posts: 1
Joined: Sun Jan 15, 2017 10:36 am

Re: extruder not pulling enough filament

Post by dong_jason » Sun Jan 15, 2017 10:43 am

My ProB system has a slight different situation:

1. If I use manual control to feed filament, it works fine.
2. When use Slicer to drive the print, it only feed very little, almost no filament.

I took off the fan and heat sink, I can see the feeding wheel moving, but very little, almost no filament is coming out.

I checked the G-Code the Slicer geneated, it has F values in the 1000-2000 range, is that reasonable?

Jason

cosmith
Posts: 52
Joined: Mon Dec 12, 2016 8:58 pm

Re: extruder not pulling enough filament

Post by cosmith » Sun Jan 15, 2017 7:05 pm

The difference is that when you're feeding manually, you have the nozzle up off the glass and it can flow freely. When you're printing, the nozzle is against the glass and there is more resistance.

If you hear a thumping sound from the extruder when you're printing, then you might be too close to the glass. If not, your extruder is slipping and not feeding the filament. You'll need to make adjustments there. This is probably the case.

--Colin

Kb2sdrjay
Posts: 4
Joined: Fri Jan 20, 2017 1:15 am

Re: extruder not pulling enough filament

Post by Kb2sdrjay » Fri Jan 20, 2017 1:23 am

Hello,

I just built my Prusa I3 Pro B this weekend and the printer did an awesome job with the sample filament(pla?) But when I tried a roll of abs I have extruder issues. If I put manual pressure it is fine but letting it run on its own, is a different story. As it was printing I adjusted the filament amount to 430 in the tune menu. Any thoughts, I am only a few days new to 3d printing. I have more pla on order and have given up on trying the abs.

Thank you

tiffy
Posts: 8
Joined: Mon Dec 05, 2016 10:44 pm

Re: extruder not pulling enough filament

Post by tiffy » Sat Jan 21, 2017 5:10 pm

same problem! plastic extruder disapoints me((

Kb2sdrjay
Posts: 4
Joined: Fri Jan 20, 2017 1:15 am

Re: extruder not pulling enough filament

Post by Kb2sdrjay » Tue Jan 24, 2017 6:47 am

Good news,

I actually broke the extruder arm because I added more tension to it, it broke right at the bearing. That whole tensioner is the weak link. I purchased a new one on ebay and the printer is printing like a champ. The spring on the geeetechouse is junk.

http://m.ebay.com/itm/US-MK8-9-1-75-3mm ... Ciid%253A1

cosmith
Posts: 52
Joined: Mon Dec 12, 2016 8:58 pm

Re: extruder not pulling enough filament

Post by cosmith » Tue Jan 24, 2017 6:55 am

I ended up going with all metal.

--Colin

alanframe
Posts: 1
Joined: Wed Feb 15, 2017 1:07 am

Re: extruder not pulling enough filament

Post by alanframe » Thu Mar 02, 2017 5:11 am

Thanks for this post it helped solve the problems I was having as well. I just stuck 3 of the small washers you get with the kit in the bottom mount hole for the spring and problem solved. :D

m_kramar
Posts: 5
Joined: Thu Mar 09, 2017 7:59 pm

Re: extruder not pulling enough filament

Post by m_kramar » Thu Mar 09, 2017 8:19 pm

In my case extruder feeder was broken inside
viewtopic.php?f=19&t=19063

gambum
Posts: 1
Joined: Wed Mar 28, 2018 1:25 am

Re: extruder not pulling enough filament

Post by gambum » Fri Mar 30, 2018 9:34 pm

I tried removing the plastic but I may have removed too much of it. Can you provide the .stl files of the mount? Are they available somewhere for download?

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