On 12/6/14, 11:40 AM, Chemiker wrote:
>
> Put the pan on an induction hob, cold, and start the hob at 375
> degrees.... The center expands while the heat is trying to get to the
> outer rim. The center wins, and the skillet bursts from the center
> outward.

In less extreme cases, this is also a good way to warp a CI pan by
permanently raising the center area.

-- Larry