Failed Print not noticed-Filament Backed up into Print Core-Jammed

[TeachEng-CS 0]

Hello,  I had a failed printed  on my Ultimaker 3 that I didn't notice.  The filament backed up (badly) into the two print cores, but mostly into core 2.  I am trying to remove the excess filament, but it is a glob.

The good news is that the UM3  will still extrude filament  from both nozzles.

The bad news is that it is so jammed, I can't change the print cores.

I keep heating up the print cores and trying to scrape off the blobbed material.  I then use a need nose pliers to pull stuff off.  I then cool it down and try again.

 

Any ideas on how to remove the GLOB?

 

Thank you.

 

Tricia

 

 

[XYZDesignPro 70]

Never had to deal with this myself, but perhaps a hair dryer, or a heat gun used to shrink shrink tubing sleeves?