Jump to content
Sign in to follow this  
stuartwood

UM2 Printhead Clogged

Recommended Posts

Posted · UM2 Printhead Clogged

Hi

 

Last night, during an overnight print my UM2 seemed to get material caught up in the head assembly which it then proceeded to fill the print head enclosre with black PLA.

 

I have stripped the print head unit down as far as i am able to but need to get some advise on how to remove the large PLA Blob, which has moulded itself to the hotend and cables.

Clogged Printhead 2

Clogged Printhead 1

 

Any ideas would be greatly appreciated

 

Share this post


Link to post
Share on other sites
Posted · UM2 Printhead Clogged

Yikes! I'm not sure there's any great way to clean that up... you may end up just having to start over with a new assembly.

But, to try and clean it up, i'd recommend trying to heat it gradually, using the heater, assuming it still works, and then remove the lump as the innermost part begins to liquify, but while the outer part is still somewhat solid. Maybe use a soldering iron or something to cut through the plastic first, down to the block, so that you can then have a starting to point to work from trying to peel off the plastic as the inner part begins to melt from the heater. But be careful, as the plastic is going to be hot, and sticky - as is the block. Even then, I'm not sure how well it's going to clean up. Maybe well enough to be useable... but I imagine there's going to be plenty you can't get off cleanly - e.g., on the cables.

 

Share this post


Link to post
Share on other sites
Posted · UM2 Printhead Clogged

Was this a result of part of the print getting loose and getting mashed into the head - or did it leak plastic from inside the print head itself - or can't you tell?

 

Share this post


Link to post
Share on other sites
Posted · UM2 Printhead Clogged

woww... how that happen ?

as said before.. you probably can melt it off the metal parts... but good luck with getting it off the cables..

let us know how things progress.. !

Ian :-)

 

Share this post


Link to post
Share on other sites
Posted · UM2 Printhead Clogged

Dear all.

 

Before I read your posts I had thought to myself......"Heat it up, see what happens....can't get any worse !"

 

I plugged the heater power and temp sensor into the mainboard, swiched on...without issue, set the hot end to heat up to 220, then 230, then 240 degrees, and as you can see from the photos I have got the vast majority of the PLA off....phew.

 

Clean Head 2

Clean Head 1

 

And yes the fan shroud pan did fill up with plastic.

 

Clogged Fan Shroud

Now for re-assembly.....wish me luck.

 

I'll let you know how i get on.

 

Thanks guys

 

Share this post


Link to post
Share on other sites
Posted · UM2 Printhead Clogged

It worked, everything is as normal again !

Thanks for your responses, the moral support is appreciated.

I'm sure the problem was as identified by Illuminarti in that the part became loose and got mashed into the head.

Thanks for your help.

 

Share this post


Link to post
Share on other sites
Posted · UM2 Printhead Clogged

I have a similar problem without the dramatic result; an ultimaker 2 with what seems to be a clogged nozzle. Any ideas on how to get everything out?

 

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

  • Our picks

    • Ultimaker Cura 4.0 | Stable available!
      Ultimaker Cura 4.0 is mainly focused on the improved user interface and cloud integration.
      As always, we want to collect your user feedback for this release. If there are any improvements you can think of, feel free to mention it here and help us to shape the next release.
      • 98 replies
×
×
  • Create New...

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!