Question?? I got a new tool today.

I used these to cut my axles.

Lenox 418G Gold 4" x 18 TPI Reciprocating Saw Blades (Titanium Coated) (10 Pack) | eBay
These are 18 teeth per inch (TPI) but 16 TPI might be better suited for a torsion bar.

You have to use a slow speed so you don't burn the blade. These Gold Lennox blades are much tougher than regular blades. If you can keep squirting cutting fluid on the blade as you cut it will greatly increase the blade life and also help make the cutting go faster. But don't get in a hurry....slow and steady.

Treblig