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14 hours ago, Enigma_M4 said:

Hi, hughwyeth,

 

taking apart the original lever is no big thing, if done carefully.

At first, the cross-shaped clamp at the "lever"-side should gently be disconnected (be careful not to break the tabs!). I used a flat screwdriver blade (the one of a victorinox swiss knive worked best for me) put between the two halves and gently pressed the two opposite tabs with tweezers, just enough for them to disengage the two halves at this point. You should take care to not cant the parts to much. Then the axle (press-fit) of the bearing should be disconnected by using a flat screwdriver between the not-worn side of your photo above and the bearing. The inner part of the axle (at part 1968) should slide off the outer part (at part 1967) where the bearing sits on.

 

My first attempt was successful while working with care; disassembling the second lever, I broke one of the spring-parts because of insufficient patience...

I hope the description is understandable and useful, unfortunately I have no pictures for clarification.

 

Regards

 

That's great, thanks so much!

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On 7/18/2019 at 7:31 PM, Enigma_M4 said:

Hi,

 

the part-numbers are 1967 (the worn-out half on the photo) and 1968.

 

One also realy useful solution would be this:

http://www.youmagine.com/designs/ultimaker-3-extruder-lever-mod

Works pretty well for me.

 

Regards

 

Hey- i have printed this new lever, but I'm a bit worried about disassembling the current lever. Although it's clearly not fit for purpose, is it possible to take it apart without breaking it?

[Continued printing issues]

On 7/27/2019 at 9:49 PM, johnse said:

I had a similar issue with MatterHackers PLA. The spool is a little to thick to place in the spool holder/guide for material 1 (the one furthest from the printer body. As such I couldn’t use the guide. It seemed to be feeding OK but during the print, the MH filament slipped over the rim and was being pulled between the coils of the breakaway support material in the inner (#2) position. This caused it to bind in the counter-rotating spool of material 2.

 

I have found that when printing without support, I can use the wide spool in position 2 just fine. I have successfully printed with support material in position 1 using the holder/guide. 

Right I think we have a similar issue. The guide definitely helps as it stops the material crossing over the other spool and rubbing against everything. 

[Continued printing issues]

14 hours ago, Enigma_M4 said:

Hi,

 

the part-numbers are 1967 (the worn-out half on the photo) and 1968.

 

One also realy useful solution would be this:

http://www.youmagine.com/designs/ultimaker-3-extruder-lever-mod

Works pretty well for me.

 

Regards

Thanks for this.

I realise that because I'm using amazons's PLA it doesn't site on the spool holder that well and the PLA is being fed into the motor at an angle. I switched it's place so it sits in material slot 1 on the spool holder instead of 2 and it managed to complete the print with no issue. I'm now trying to print this lever to see if that fixes the issue and will try and replace the worn lever with this one. Thanks!

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34 minutes ago, gr5 said:

 

20) The "plus" feeder can have an issue where the filament doesn't sit properly for one print and it permanently damages the arm inside the feeder as shown by this photo - the hole is ground down asymetrically: http://gr5.org/plus_feeder_issue.jpg

 

 

BINGO

 

You're a genius dude, thanks so much for your post. I'm 99% sure this is it (or at least part of the problem)- when i originally saw the arm had this dip in it I thought it must be part of the design but on removing it, it's clearly been worn out. 

 

 

I take it I need to contact a local reseller to source this part? Is there a more durable alternative version out there?

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6 minutes ago, orlin278 said:

What happens if you start a print immediately after this happens?

Does it then print normal in the beginning or are there then problems from the start?

 

I had similar issues. For me the problem was the lever, which presses the material against the knurled wheel of the feeder. It came apart and the feeding wasn't correct anymore. After a replacement it now works fine

 

See also this thread:

 

 

Thanks for the reply. This does look similar. I did take apart the feeder motor and it seemed fine but i will try again. 

 

I just sent another print immediately and nothing's coming out. I'm sure it's the feeder eating into the material, but i also know that the nozzle gets sort of blocked- when i do a hot pull and initially insert the pla to clear it out, i need to push quite hard and there's a pop sound before a load of pla pours out, so something's definitely getting stuck in there somehow. 

[Continued printing issues]

Hey guys,

 

I've been trying to fix this for a while- I've taken apart the feed motor, cleaned out bowden tubes, replaced nozzles, hot and cold pull, levelled the print bed, replaced material, basically everything I can think of. A print will start fine and then be unable to complete subsequent layers as you can see in this photo:

 

I think it's a feed issue- either the nozzle is blocked or the feed motor has an issue, as i can force the material through near the feed motor and it seems to resume correct printing but resorts back to this intermittent printing pattern soon after. I have no idea why it's happening. I'm using Amazon's 2.85mm PLA using the settings recommended by them ( 215c printing temp, 50c plate temp). I've given up trying to figure this out at this point and would love it if anyone here could shed any light on it?

 

On the printer when the material is loaded, i select PLA and then in Cura I put the settings listed above in. When i send to print i get a message saying there's a difference in printer and cura settings and i Override- could this be the source of the issue?