In Bottom pressing, or bottoming, the punch presses the workpiece versus the bottom floor of the V or U-shaped die, which defines the final bend angle. This process makes specific bends and lowers the tendency for springback in the workpiece as a consequence of the appliance of increased bending power. https://donovan5ok66.mycoolwiki.com/7512475/how_stamping_iron_pin_hs_code_can_save_you_time_stress_and_money