Three sizes spring benders for internal and external tube bending of soft annealed brass, copper and warmed plastic styrene tubes. Lubricate with petroleum jelly for easy extraction after bending. Ideal for scalemodelling and protyping as copper and brass can be soldered and brazed.
The K&S tubing benders will support the tube for a kinkless bend. However note hardened bend better when soft. To soften heat the tube in the bending area until color change. After bending is complete reheat tube in same area and dunk in water or oil to harden. Polish with metal polish autosol to restore color.