ROOFING NAILS MAKING MACHINE* The plant consists of the main machine, washer cutting press, polishing barrel and nail cutter and die grinding machine.* Suitable for Plain type and Twisted Type Roofing NailsĀ * Twisted Roofing Nails require an Optional Thread Rolling Machine* Plain Washers made on the press are fed in the hopper of the main machine. On every stroke, one washer is inserted, given shape and fixed into the nail* Ready Nails are then polished in the Polishing Barrel