hole puncher comprises a central longitudinal shaft 22 which is threaded in fig1 the embodiment shown is illustrative of a device for punching of holes over a twelve inch length however by repetition of the structure shown in fig1 it is possible to have multiple lengths of explosive charges from one to forty feet in length at the lowermost end 24 of the shaft 22 is a nut 26 which acts as a stop for further downward movement of the casing hole puncher along the length of the shaft 22 a lower disk 28 includes two supporting arms 30 which are connected to a hub 32 which fits over the shaft 22 a nut 34 is located on the opposite side of the hub 32 from the nut 26 similarly above and below the disk 28 are securing nuts 36 and 38 respectively the nuts 26 34 36 and 38 maintain the position of the disk 28 so that the plans of the disk extends perpendicular to the longitudinal axis of the shaft 22 spaced above the disk 28 by approximately twelve inches is an upper disk 38 having three arms 40 terminating in a hub 42 fitted over the shaft 22 nuts 44 and 46 secure the hub on the shaft 22 while nuts 48 and 50 secure the disk 38 on the shaft so that the plane of the disk 38 extends perpendicular to the longitudinal axis of the shaft 22 a nut 52 located at an upper end 54 of the shaft.