I was touring a heat treater for Ford and Chrysler, and I watched a couple teenager's straightening axles after induction hardening.

They just had a couple V-blocks and an arbor press. All by hand.
Locate the high spot, push it down with the press some amount to account for rebound, and move them on.

I'm confident Chuck would have had Fords axles spinning truer (sp?) than they ever had before. wink

Out there doing it best I can.