Squaring corners
Shaping and seaming funnels
Folding the edges of sheet metal
Turning up flanges on metal disc
Used to flat edges
Used to taper articles
Used to turn circular disc
Used to squaring corners
Making large diameter thin gauge tubes
Making small diameter thin gauge tubes
Making large diameter heavy gauge tubes
Making small diameter heavy gauge tubes
Geometric construction method
Triangulation method
Parallel line method
Radial line method
Triangular method