Ron Aschtgen really loves his work! Here, Aschtgen has attached the slide hammer tip to the stud by rotating the collar until it grips the stud shaft. Once it’s tight, lightly tap the slide until the metal is pulled out in the affected area. You don’t want to go overboard here—doing so will cause the sheetmetal to “volcano.” In the days before spot welders, it was common to drill a hole for the slide hammer to fit inside. This caused lots of jagged peaks that are much harder to level.