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

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

 

 

[Bed too low or too high?]

Fabulous video. What a great collection of tips. Thank you. Tricia

[Bed too low or too high?]

I can't seem to get my filament to step to the bad. I've re leveled several times but with the same problem I changed the layer height to .2 mm printing at 215ﾟ with a 60ﾟ bedtemp. First layer is grainy and nozzle eventually pull print off bed. Any ideas?