Remove broken heatbreak I'm trying to replace my hotend with the E3D Hemera direct kit. I got to the final step of hot-tightening the hot side and managed to snap my heatbreak. The part that screws into the heat-sink is stuck, though I was able to remove it from the heater block section.

Below is a picture of the heatbreak. The red square shows what it in the heat-sink. It's mostly thread (with thermal compound) but a bit of the unthreaded metal is sticking out (above the disk shown). 

I've tried removing it with a jeweler's drill (which is how I removed the heater block portion, but I cannot get a good grip on the long threaded piece. I've also tried pliers and rounded needle-nose pliers. Neither worked. I couldn't find my regular needle-nose and will go to the store to try that. Are there other options to break this free or am I stuck with buying a replacement heat-sink? I already ordered a replacement, but it'd be nice to have a backup in case something else goes awry (as has been the case with this modification; this is snafu number 4).
Broken screws or screws with damaged screw heads are typically removed with screw extractors. Since there is already a hole you could "drill" (unscrew) it out with a screw extractor, as it is counter clockwise, it is about creating enough friction to unscrew it from the threads. Beware that it is not drilling and spalling material, turn slowly.



Alternatively, a grip vice pliers may work if there is enough "meat" to clamp on.