Apparatus and method for a low fragment explosive access tool using one piece of explosive sheet in the form of a simple geometric shape, a booster charge of explosive sheet in the form of a disk, a blasting cap, and inert materials

A method of creating an opening in a target material, comprising the steps of:

• providing a total of eight layers of tamper material, with at least one layer of flexible magnetic sheet material with a specific gravity between 3.3 and 3.7, and sheet material with a specific gravity of less than 0.8, all sheets of 0.055 to 0.065 inch thickness, of symmetric geometry, and symmetrically placed atop one another;
• providing an explosive charge of a single piece of sheet explosives with symmetric convex vertices wrapped symmetrically around said layers of sheet material;
• providing a smoothing layer disposed below said sheet explosives and above the target;
• and
• providing initiating means, located proximately central to and atop the explosive charge, to initiate the explosive sheet creating an explosive force, wherein the explosive force, guided by said charge geometry and mass of said flexible magnetic sheets and sheets of lesser specific gravity, penetrates the target material, creating a plurality of petals cantilevered from the target material, to define a fragment-free opening in the target material.