Tools for cutting bolts

[69SCSS]

hey guys, just wondering what you guys use for cutting off bolts when they are rusted solid. I used my 4.5" Angle grinder with a cutting wheel to get my U bolts off the rear that were stuck, and went thru 2 blades. I was leery of using the sawzall with the metal blade just because I was worried about hitting the axle tube.

I have a decent Craftsman 4.5 angle grinder and used some standard ACE blades, not sure what brand. They worked but got eaten up pretty quick, but did the job. next up is the cab to frame bolts!