blade clamping surface 13 on the left side member 12 slides inside a shoe like protrusion in the right side member at 23 so as to hold blade 16 in a lower off center position angled slightly with respect to the planar bottom surface 15 the knife blade is easily removed by loosening the bolts 20 and separating the top and bottom sections 12 and 14 the bottom section 14 preferably has a cavity at 19 to hold extra knife blades 22 since the multi edged blade element 16 is symmetrical it may be used in a left handed or right handed configuration without any modification to the multi edged blade structural details of an embodiment of a multi edged utility knife are shown in fig2 a 2 b 3 a and 3 b in fig2 a there is shown a side view detailing bottom section 14 directly below in fig2 b a top view of the bottom section 14 is depicted a channel 17 is formed adjacent planar bottom surface 15 in the blade supporting portion to accept the knife blade the width of the channel is substantially the same as the width of the blade which is designed to fit as a loose fit the depth of the channel 17 combines with the clamping surface 13 to form a space that is slightly less than that of the blade thickness so that when the top and bottom sections 12 and 14 are clamped the knife blade 16 is firmly held also illustrated is an opening which houses.