I agree the spot weld cutter works great. You can see my results on my BLOG. It will probably cut 40 to 60 spot welds depending on how thick the steel is and how carefully you use it.

1965 Chevy C10 Shortbed 1/2-Ton Stepside
Truck College
In the Stovebolt Gallery
In the Project Journals Forum
The Build BLOG on Weebly
T5 Transmission Build page