so that angle alpha u03b1 creates a span between parallel and offset cutting edges 13 and 14 the angle alpha u03b1 is selected relative to the cross sectional configuration of the slot 21 so that when the shaped blade is loaded into the cartridge body see fig4 the blade is held under compressive stress by first and second blade supports 23 and 24 creating friction between each blade and the blade support to position the blade accurately to develop appropriate blade geometry a notch 26 in the blade engages a mating protuberance 27 as the blade slides along incline 28 and ultimately snaps into position as shown in fig5 note that the rear wall 22 of the cartridge body is formed with openings 29 29 which mate with blade openings 16 16 to facilitate purging shaving debris to enhance the proper position of the blade and to insure its retention within the body of the cartridge the cap or first face engaging surface is formed with spaced shoulders or stops 31 31 which engage mating portions of the adjacent blade edge as is apparent in fig5 and 7 correspondingly and for further insurance of proper placement and retention of the blade the guard bar 19 is formed with a spaced pair of stops 32 32 engaging mating portions of the blade edge 14 as shown in fig5 an alternative alignment structure is shown in fig7 wherein a pair of locator pins 33 33 molded integrally with.