A few years ago I first bought tool 11094 to remove the side panels. I used it again last year for another project. The first cutter successfully removed 5 quarter panels before I realized it was no longer up to the task. There were probably 120 spot welds total, most of which were at less than ideal angles as I worked around the wheel wells and body panels. I wasn't very careful with the drilling speed either and rarely used cutting lubricant. So I just ordered this set of cutters and some lube to clean up some 1960's spot welds. This time I watch the speed of the drill and it's fun to work with. Use a good center shot and try to stay as straight as possible while maintaining good body control.