New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Ultimaker 2 is extruding poorly #393

Closed
amcewen opened this Issue Nov 21, 2016 · 18 comments

Comments

Projects
None yet
5 participants
@amcewen
Member

amcewen commented Nov 21, 2016

The standard Ultimaker 2 isn't extruding very well at the moment. It will extrude, but the extruded filament is thinner than it should be. I improve matters a bit on the last print I did by pushing the temperature up to 215 and printing in "ulti" quality (which doesn't need the extruder to push as much plastic out).

I guess first step - if no-one has tried it recently - would be to clean the nozzle out with the cold pull method. If that doesn't improve matters then it's probably worth checking the state of the PTFE coupling.

@DefProc

This comment has been minimized.

Show comment
Hide comment
@DefProc

DefProc Nov 21, 2016

Julian mentioned that he'd dine a few cold pulls recently, with little
improvement.

On 21 Nov 2016 4:04 p.m., "Adrian McEwen" notifications@github.com wrote:

The standard Ultimaker 2 isn't extruding very well at the moment. It will
extrude, but the extruded filament is thinner than it should be. I improve
matters a bit on the last print I did by pushing the temperature up to 215
and printing in "ulti" quality (which doesn't need the extruder to push as
much plastic out).

I guess first step - if no-one has tried it recently - would be to clean
the nozzle out with the cold pull method. If that doesn't improve matters
then it's probably worth checking the state of the PTFE coupling.


You are receiving this because you are subscribed to this thread.
Reply to this email directly, view it on GitHub
#393, or mute
the thread
https://github.com/notifications/unsubscribe-auth/AAU72JIslj2OpdGKyV2HqreVkgfwcfFxks5rAcESgaJpZM4K4YFj
.

DefProc commented Nov 21, 2016

Julian mentioned that he'd dine a few cold pulls recently, with little
improvement.

On 21 Nov 2016 4:04 p.m., "Adrian McEwen" notifications@github.com wrote:

The standard Ultimaker 2 isn't extruding very well at the moment. It will
extrude, but the extruded filament is thinner than it should be. I improve
matters a bit on the last print I did by pushing the temperature up to 215
and printing in "ulti" quality (which doesn't need the extruder to push as
much plastic out).

I guess first step - if no-one has tried it recently - would be to clean
the nozzle out with the cold pull method. If that doesn't improve matters
then it's probably worth checking the state of the PTFE coupling.


You are receiving this because you are subscribed to this thread.
Reply to this email directly, view it on GitHub
#393, or mute
the thread
https://github.com/notifications/unsubscribe-auth/AAU72JIslj2OpdGKyV2HqreVkgfwcfFxks5rAcESgaJpZM4K4YFj
.

@amcewen amcewen added the Broken label Nov 28, 2016

@amcewen

This comment has been minimized.

Show comment
Hide comment
@amcewen

amcewen Nov 28, 2016

Member

Looked at this a tiny bit yesterday, and it takes lots of pressure to manually force any plastic through the extruder, so I'm moving it up to broken.

Member

amcewen commented Nov 28, 2016

Looked at this a tiny bit yesterday, and it takes lots of pressure to manually force any plastic through the extruder, so I'm moving it up to broken.

@goatchurchprime

This comment has been minimized.

Show comment
Hide comment
@goatchurchprime

goatchurchprime Nov 30, 2016

Contributor

I thought about exchanging the nozzles to get at least one printer going well, but got as far as dismantling only the nozzle on the ultimaker before deciding not to completely wreck both of them. (The other still prints, just with bad tolerance.)

Maybe we should exchange the rods if we want to get one into better order fastest.

There was a spare used nozzle in the box, but it looked as bad as the one that's there.

I can't get the temperature sensor out of the nozzle block and I don't want to break it.

Anyway, we really ought to have some running spares for this sort of thing as these machines are getting a lot of use.

Contributor

goatchurchprime commented Nov 30, 2016

I thought about exchanging the nozzles to get at least one printer going well, but got as far as dismantling only the nozzle on the ultimaker before deciding not to completely wreck both of them. (The other still prints, just with bad tolerance.)

Maybe we should exchange the rods if we want to get one into better order fastest.

There was a spare used nozzle in the box, but it looked as bad as the one that's there.

I can't get the temperature sensor out of the nozzle block and I don't want to break it.

Anyway, we really ought to have some running spares for this sort of thing as these machines are getting a lot of use.

@DefProc

This comment has been minimized.

Show comment
Hide comment
@DefProc

DefProc Dec 1, 2016

DefProc commented Dec 1, 2016

@goatchurchprime

This comment has been minimized.

Show comment
Hide comment
@goatchurchprime

goatchurchprime Dec 1, 2016

Contributor

Which spare part(s) are you referring to?
https://ultimaker.com/en/products/spare-parts
https://www.dream3d.co.uk/product-category/upgrades-spare-parts/

(I don't see any sales of new rods in those sites.)

Maybe we should keep an update of spare parts supplies and sources on this page:
https://github.com/DoESLiverpool/wiki/wiki/Ultimaker

Contributor

goatchurchprime commented Dec 1, 2016

Which spare part(s) are you referring to?
https://ultimaker.com/en/products/spare-parts
https://www.dream3d.co.uk/product-category/upgrades-spare-parts/

(I don't see any sales of new rods in those sites.)

Maybe we should keep an update of spare parts supplies and sources on this page:
https://github.com/DoESLiverpool/wiki/wiki/Ultimaker

@amcewen

This comment has been minimized.

Show comment
Hide comment
@amcewen

amcewen Dec 5, 2016

Member

I think we should get this back up and running first rather than decide to leave it broken and embark upon a massive upgrade of the extruder - @DefProc, feel free to spin the upgrade out as a new issue.

@DoESsean has bought a new PTFE coupling (as I still haven't found the spares mentioned in #283). The old one is nicely blocked with some filament, so it's possible that just replacing that (and doing a cold pull to clean out the well burnt bits of PLA left in the nozzle) might get it up and running again.

I had a go at removing the nozzle during makernight last week, but didn't have any more joy than @goatchurchprime. I've left the new PTFE coupling with the printer, so I think the next step would be reassembling it with the new coupling and seeing if that gets us back up and running.

Member

amcewen commented Dec 5, 2016

I think we should get this back up and running first rather than decide to leave it broken and embark upon a massive upgrade of the extruder - @DefProc, feel free to spin the upgrade out as a new issue.

@DoESsean has bought a new PTFE coupling (as I still haven't found the spares mentioned in #283). The old one is nicely blocked with some filament, so it's possible that just replacing that (and doing a cold pull to clean out the well burnt bits of PLA left in the nozzle) might get it up and running again.

I had a go at removing the nozzle during makernight last week, but didn't have any more joy than @goatchurchprime. I've left the new PTFE coupling with the printer, so I think the next step would be reassembling it with the new coupling and seeing if that gets us back up and running.

@amcewen

This comment has been minimized.

Show comment
Hide comment
@amcewen

amcewen Dec 5, 2016

Member

@goatchurchprime I've made a start on a spares section on the wiki https://github.com/DoESLiverpool/wiki/wiki/Ultimaker#spares

Member

amcewen commented Dec 5, 2016

@goatchurchprime I've made a start on a spares section on the wiki https://github.com/DoESLiverpool/wiki/wiki/Ultimaker#spares

@DefProc

This comment has been minimized.

Show comment
Hide comment
@DefProc

DefProc Dec 6, 2016

DefProc commented Dec 6, 2016

@JimNixon

This comment has been minimized.

Show comment
Hide comment
@JimNixon

JimNixon Dec 6, 2016

JimNixon commented Dec 6, 2016

@amcewen

This comment has been minimized.

Show comment
Hide comment
@amcewen

amcewen Dec 10, 2016

Member

@ajlennon and I reassembled the extruder with the new PTFE coupler, and with some cold pulls, fiddling with needles, etc. managed to get the nozzle unblocked and plastic flowing.

However, while doing all that there was a build-up of PLA in between the bottom of the PTFE coupler and the nozzle (presumably forced there when there wasn't a clear path through the nozzle and so nowhere else for the plastic to go) which blocked the PTFE coupler.

So, disassembled and cleaned things out again - @jackie1050 suggested a great trick of using a lighter to warm the PLA plugging the coupler so it softened and could be pulled out.

All reassembled now and printing really nicely.

Member

amcewen commented Dec 10, 2016

@ajlennon and I reassembled the extruder with the new PTFE coupler, and with some cold pulls, fiddling with needles, etc. managed to get the nozzle unblocked and plastic flowing.

However, while doing all that there was a build-up of PLA in between the bottom of the PTFE coupler and the nozzle (presumably forced there when there wasn't a clear path through the nozzle and so nowhere else for the plastic to go) which blocked the PTFE coupler.

So, disassembled and cleaned things out again - @jackie1050 suggested a great trick of using a lighter to warm the PLA plugging the coupler so it softened and could be pulled out.

All reassembled now and printing really nicely.

@DefProc

This comment has been minimized.

Show comment
Hide comment
@DefProc

DefProc Jan 17, 2017

The ultimaker has stopped extruding again.

I've done a few cold pulls (with @goatchurchprime) and there seems to be a blockage in the tip that won't attach to the hot filament.

I've ordered some 0.4mm stainless wire to be able to push upwards to see of that will clear it, but of it needs stripping down, then it might be worth considering an Olsson Block replacement at the same time.

DefProc commented Jan 17, 2017

The ultimaker has stopped extruding again.

I've done a few cold pulls (with @goatchurchprime) and there seems to be a blockage in the tip that won't attach to the hot filament.

I've ordered some 0.4mm stainless wire to be able to push upwards to see of that will clear it, but of it needs stripping down, then it might be worth considering an Olsson Block replacement at the same time.

@DefProc DefProc reopened this Jan 17, 2017

@DefProc

This comment has been minimized.

Show comment
Hide comment
@DefProc

DefProc Jan 17, 2017

There's an ultimaker page listing the steps for clearing a nozzle now at: https://ultimaker.com/en/resources/21619-how-to-unclog-an-ultimaker-nozzle

DefProc commented Jan 17, 2017

There's an ultimaker page listing the steps for clearing a nozzle now at: https://ultimaker.com/en/resources/21619-how-to-unclog-an-ultimaker-nozzle

@JimNixon

This comment has been minimized.

Show comment
Hide comment
@JimNixon

JimNixon Jan 17, 2017

JimNixon commented Jan 17, 2017

@JimNixon

This comment has been minimized.

Show comment
Hide comment
@JimNixon

JimNixon Jan 17, 2017

JimNixon commented Jan 17, 2017

@DefProc

This comment has been minimized.

Show comment
Hide comment
@DefProc

DefProc Jan 19, 2017

We've got some 0.4mm stainless steel wire to help with cleaning the nozzle. I'll leave it on the UM2. It's marked: 3D printer nozzle cleaning

DefProc commented Jan 19, 2017

We've got some 0.4mm stainless steel wire to help with cleaning the nozzle. I'll leave it on the UM2. It's marked: 3D printer nozzle cleaning

@JimNixon

This comment has been minimized.

Show comment
Hide comment
@JimNixon

JimNixon Jan 19, 2017

Had a look at it and the PTFE coupler is worn out. Chatted to Adrian about it who said that it was replaced recently, so I suspect it's a counterfeit part. I've been using the ones manufactured by 3dSolex (the creator of the Olhussen block upgrade) and they're better than even the proper ones from Ultimaker. Ordered from their UK distributor before and had great service.

http://www.goodtube.uk/product-page/21dadf0e-08e3-ba79-32fa-69c3a20f9f79

JimNixon commented Jan 19, 2017

Had a look at it and the PTFE coupler is worn out. Chatted to Adrian about it who said that it was replaced recently, so I suspect it's a counterfeit part. I've been using the ones manufactured by 3dSolex (the creator of the Olhussen block upgrade) and they're better than even the proper ones from Ultimaker. Ordered from their UK distributor before and had great service.

http://www.goodtube.uk/product-page/21dadf0e-08e3-ba79-32fa-69c3a20f9f79

@DoESsean

This comment has been minimized.

Show comment
Hide comment
@DoESsean

DoESsean Jan 24, 2017

Contributor

Jim's recommendation was out of stock, so we've ordered one from https://www.dream3d.co.uk/product/ultimaker-2-ptfe-coupler/

Contributor

DoESsean commented Jan 24, 2017

Jim's recommendation was out of stock, so we've ordered one from https://www.dream3d.co.uk/product/ultimaker-2-ptfe-coupler/

@amcewen

This comment has been minimized.

Show comment
Hide comment
@amcewen

amcewen Jan 28, 2017

Member

@JimNixon fitted the new coupler at Maker Night and it seems to be back up and printing nicely (currently printing off a new nozzle for the vacuum cleaner to fix #436)

Member

amcewen commented Jan 28, 2017

@JimNixon fitted the new coupler at Maker Night and it seems to be back up and printing nicely (currently printing off a new nozzle for the vacuum cleaner to fix #436)

@DoESsean DoESsean reopened this Oct 26, 2017

@DoESsean DoESsean closed this Oct 26, 2017

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment