Can You Kill a Star With Iron?

We need a big iron bar, 1 AU x 4 AU x 9 AU. :)

Funny you should ask........I saw a cluster of them burn out earlier today.

Don't give the star any coffee in the morning!

the best way i could think of is to pull a "Red" Adair... blow it out with a serious explosion that would interfere with the fusion by interrupting the process and redistributing the plasma ... if that was even capable. of course, it would take something equivalent to a very close supernova likely... but... as long as we are talking dreamworld and discussing magically replacing cores... why not?