A method that uses no power tools at all, minus the shrinking disc but you dont need one to repair that pan.
http://www.imagestation.com/album/pictures.html?id=2093955818

http://www.imagestation.com/album/pictures.html?id=2103083895

http://www.imagestation.com/album/pictures.html?id=2099542273

The disc from sunchaser is WAY OVER priced and not nearly as effective as the smooth disc out there made by Wray Schelin or John Kelly. Both of the said discs can be bought for 35-40 bucks, a tad less then the 300+ that sunchaser wants.

Currently working on custom metal and How to videos.

1949 and 1972 chevy trucks
70 chevelle SS455
Pictures of my work and projects
http://community.webshots.com/user/sevt_chevelle