How to remove caked material from printer core

[Niels_Amstel_Engineering 2]

Somehow the material (Cards PLA-X3) I printed with did not attach to the build plate. Instead it became stuck between the silicon protection and the print core.

What is a safe way to remove this, without ruining the print core?

 

Edit: solved using this technique

Edited March 23, 2021 by Niels_Amstel_Engineering

[glx 27]

Oh you were very lucky, there are nightmare-pictures around here where this completely killed both cores and flooded the complete printhead (looking at that beautiful CC-Core). 
The most crucial thing is to get the part stuck down securely. I use almost always a brim (for small things that I can observe while they print usually not) and use mostly Dimafix glue. 

[JohnInOttawa 104]

If you have a heat gun with a narrow nozzle and can shield the print core frame so it doesn't warp, you can focus on the nozzle area and gradually work outward. 

 

It looks from your photos as if you did not get much material on the heater or sensor cables.  That is a win.  If it is mostly on the heat block, slow and steady, you should manage to get everything off.

 

John

Edited March 24, 2021 by JohnInOttawa