Head studs

[dcnner]

I have broken studs flush myself, and succesfully pulled studs out of four blocks ( few by some standards). The method I use with success is heating the upper half red hot with a torch, quenching with a block of petroleum wax at the block. Fire and smoke----however when left to cool, the studs will back right out with a double nut. This method isn't for everyone and has some hazards involved. I have forgotten to whom to give credit for the idea.