embodiments are described more fully below with reference to the accompanying figures , which form a part hereof and show , by way of illustration , specific exemplary embodiments . these embodiments are disclosed in sufficient detail to enable those skilled in the art to practice the invention . however , embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein . the following detailed description is , therefore , not to be taken in a limiting sense in that the scope of the present invention is defined only by the appended claims . the blade sharpener of this invention is designated by the reference numeral 10 . sharpener 10 includes a horizontally disposed support plate 12 which is preferably rectangular in shape . support plate 12 also serves as the lid of a container on box 13 as will be described in more detail hereinafter . support plate 12 includes a first end 14 , a second end 16 , a first side 18 , a second side 20 , an upper side 22 and a bottom side 24 . bottom side 24 of support plate 12 has a rectangular recess 25 formed therein . when the support plate 12 is functioning as a lid , the bottom side 24 will be facing upwardly as seen in fig1 . bores , sockets or openings 26 , 28 , 30 and 32 extend downwardly into the upper side 22 of support plate 12 in a spaced - apart manner inwardly of side 18 thereof . bores 34 , 36 , 38 and 40 extend downwardly into the upper side 22 of support plate 12 intermediate sides 18 and 20 in a spaced - apart manner . bores 42 , 44 , 46 and 48 extend downwardly into the upper side 22 of support plate 12 inwardly of side 20 in a spaced - apart manner . for purposes of description , bores 26 and 28 will be described as being a first pair of bores , bores 34 and 36 will be described as being a second pair of bores , and bores 42 and 44 will be described as being a third pair of bores . bores 30 and 32 will be described as being a fourth pair of bores , bores 38 and 40 will be described as being a fifth pair of bores and bores 46 and 48 will be described as being a sixth pair of bores . bore 42 extends downwardly into support plate 12 at approximately a 10 degree angle as does bore 44 . the angles of bores 42 and 44 are the same but opposite to one another . in other words , the bores 42 and 44 extend inwardly into support plate 12 so as to extend slightly towards one another . bores 34 and 36 extend downwardly into support plate 12 at approximately a 14 degree angle . bores 26 and 28 extend downwardly into support plate 12 at approximately an 18 degree angle . bores 30 and 32 extend downwardly into support plate 12 at approximately a 21 degree angle . bores 38 and 40 extend downwardly into support plate 12 at approximately a 25 degree angle . bores 46 and 48 extend downwardly into support plate 12 at approximately a 30 degree angle . the 10 , 14 , 18 , 21 , 25 and 30 degree angles correspond to the most common cutting edge facet angles plus or minus 1 degree . the numeral 50 refers to a first sharpening stone holder while the numeral 50 ′ refers to a second sharpening stone holder which is identical to holder 50 , only holder 50 will be described in detail with “′” indicating identical structure on holder 50 ′. holder 50 includes a body member 52 having an upper end 54 and a lower end 56 . body member 52 includes a flat base portion 58 and side walls 60 and 62 . holder 50 may be constructed of plastic or metal . an elongated cylindrical stud 64 extends downwardly from the lower end 56 of body member 52 and which is configured to be selectively removably inserted into one of the bores formed in support plate 12 as will be described hereinafter . the numeral 66 refers to a conventional sharpening stone member which is snap - fitted into body member 52 between the side walls 60 and 62 of body member 52 as seen in the drawings . sharpening stone member 66 ′ is snap - fitted into body member 52 ′ between the side walls 60 ′ and 62 ′ of body member 52 ′. if it is desired to sharpen a blade having 10 degree facets , the stud 64 of holder 50 will be inserted into bore 42 of support plate 12 and the stud 64 ′ of holder 50 ′ will be inserted into bore 44 of support plate 12 . if it is desired to sharpen a blade having 14 degree facets , the stud 64 of holder 50 will be inserted into bore 34 of support plate 12 and stud 64 ′ of holder 50 ′ will be inserted into bore 36 of support plate 12 . if it is desired to sharpen a blade having 18 degree facets , stud 64 of holder 50 will be inserted into bore 26 of support plate 12 and stud 64 ′ of holder 50 ′ will be inserted into bore 28 of support plate 12 . if it is desired to sharpen a blade having 21 degree facets , stud 64 of holder 50 will be inserted into bore 30 of support plate 12 and stud 64 ′ of holder 50 ′ will be inserted into bore 32 of support plate 12 . if it is desired to sharpen a blade having 25 degree facets , stud 64 of holder 50 will be inserted into bore 38 of support plate 12 and stud 64 ′ of holder 50 ′ will be inserted into bore 40 of support plate 12 . if it is desired to sharpen a blade having 30 degree facets , stud 64 of holder 50 will be inserted into bore 46 of support plate 12 and stud 64 ′ of holder 50 ′ will be inserted into bore 48 of support plate 12 . box 13 includes a compartment 68 which receives the sharpener stones 66 and 66 ′ for the storage of the blade sharpener 10 . box 13 also includes a compartment 70 which receives the sharpening stone holders 50 and 50 ′. box 13 also has a small compartment 72 formed therein which receives a bottle 74 of sharpening oil . support plate 12 , when functioning as a lid for box 13 , is selectively pivotally secured to box 13 so as to selectively close the upper end of box 13 . the numeral 76 refers to a knife blade having blade angles or facets 78 and 80 . the assembly of this invention is used as will now be described . assuming that the components of the assembly are positioned in the box 13 , support plate 12 is opened and detached from the box 13 . the support plate 12 is then placed on a horizontally disposed supporting surface . the holders 50 and 50 ′ are removed from the box 13 . the sharpening stones 66 and 66 ′ are then snap - fitted onto the holders 50 and 50 ′ respectively . assuming that the facets 78 and 80 of the blade 76 are disposed at an angle of 10 degrees , the studs 64 and 64 ′ of holders 50 and 50 ′ respectively are inserted downwardly into bores 26 and 28 respectively . cutting oil or water is then placed on the faces of the sharpening stones 66 and 66 ′. the blade 76 is then vertically inserted between the stones 66 and 66 ′. the blade 76 is then brought into contact with stone 66 so that facet 78 is brought into contact with stone 66 . the blade 76 is then moved horizontally and downwardly to sharpen facet 78 as the blade 76 is moved along stone 66 . the blade 76 is then brought into contact with stone 66 ′ so that facet 80 is in contact with stone 66 ′. the horizontal and downwardly movement of blade 76 with respect to stone 66 ′ sharpens facet 80 . the person sharpening the facets 78 and 80 repeats the movements described above until the blade 76 is sharpened . the person moves the blade 76 back and forth between the stones 66 and 66 ′ with each facet being sharpened the same number of times which is easily remembered by the person . if the blade 76 has facets with angles different than 10 degrees , other pairs of the bores will be utilized . thus it can be seen that the invention accomplishes at least all of its stated objectives . although the invention has been described in language that is specific to certain structures and methodological steps , it is to be understood that the invention defined in the appended claims is not necessarily limited to the specific structures and / or steps described . rather , the specific aspects and steps are described as forms of implementing the claimed invention . since many embodiments of the invention can be practiced without departing from the spirit and scope of the invention , the invention resides in the claims hereinafter appended .