surfaces in general various combinations of pyrotechnic materials may be used for this purpose one commonly used pyrotechnic material consists of red phosphorous or nano aluminum indicated as element 46 in fig4 and is used with an appropriate hinder such as vinyl alcohol acetate resin or nitrocellulose to firmly adhere to the bottom surface of the striker mass 39 the second component can be potassium chlorate potassium nitrate or potassium perchlorate indicated as element 47 in fig4 and is used with a hinder preferably but not limited to with such as vinyl alcohol acetate resin or nitrocellulose to firmly attach the compound to the surface of the base 32 preferably inside of a recess provided in the base 32 u2014 not shown as shown in fig4 the basic operation of the disclosed inertial igniter 30 will now be described with reference to fig4 8 any non trivial acceleration in the axial direction 48 which can cause dead coil section 45 to overcome the resisting force of the setback spring 44 will initiate and sustain some downward motion of only the dead coil section 45 the force due to the acceleration on the striker mass 39 is supported at the dimples 43 by the locking balls 42 which are constrained inside the holes 41 in the posts 33 if an acceleration time in the axial direction 48 imparts a sufficient impulse to the dead coil section 45 i e if an acceleration time profile is greater than a predetermined threshold it will translate down along the axis of the assembly until the setback locking halls 42 are no longer constrained to engage the striker mass 39.