method includes a punch core and a cooperating die core ring having complimental geometry for forming the chuckwall and radius configuration the article formed by the method and apparatus includes an end panel having a straight wall portion between the normal tapered wall portion and countersink radius application_number US 92498186 A description it will first be noted that the apparatus and method of the present invention are primarily intended to be utilized in conjunction with a double acting press having inner and outer rams which are independently movable and controllable with respect to each other a press of this type has not been described in great detail since such presses as exemplified in ridgway u s pat no 3 902 347 are well known in this art referring then to fig1 first for a general review of the various tooling components it will be noted that the inner ram 10 has a punch core holder 11 secured thereto by one or more screws 11a a punch core 12 is secured at the distal end of the punch core riser 11 by the adjustment screw 12a reference to the other views of the drawings and particularly to views 4a through 5e which are on a larger scale than fig1 will permit a more detailed examination of the punch core 12 it will thus be seen that the punch core 12 has an annular radiused nose area 12b projecting from its bottom surface the punch core also has a tapered sidewall 12c which extends from a straight sidewall thereof downwardly toward the radiused area 12b and.