a VERY valid point. Thank you for explaining it in that way. A lesser orator couldn't have done so, in such an effective manner. I'm sorry if I failed to see it that way earlier.
Could there be a way to simulate a IHS? Like machining a copper block and cutting out a core size copper core area just below the upper layer, which could be left to be the size of the ihs? This way you get the IHS (kinda??
) no remounting issues. Better or .. closer real world look? Sounds harder to make, but at least it would/could perhaps yield a more realistic test? The heat would still come from the core area, but be allowed to spread somewhat.