Question?? I got a new tool today.

My arms and shoulders are in pain just thinking about using that on a torsion bar. Trying to steady the tool while the blade is moving back and forth on a hardened steel item sounds like a recipe for pain and suffering!

Why not use one of these?
Milwaukee - Grinders - Power Tools - The Home Depot

I've used a grinder for cutting out metal frame windows in a house to removing metal on the 340 six pack coil mount so it would fit around the plenum on a LD4B intake.