Rod magnets are made very similar to the Alnico bar magnets with the exception of many rods approximately 6.5 to 11.5 inches long inserted into sand, removed and the molten magnet is poured in each cavity. Typical rod magnets used in pickups with the diameter of .187″ start out at approximately .194″ in diameter. For magnet diameters around .195″ and slightly larger the raw magnet starts out at .210″ in diameter and measured from the samples I have. The surface of the raw magnet is rough and pitted and one end is pointed similar to the shape of the molding tool and the other end is snapped off at the break-off gate used for pouring the molten magnet.