This invention refers to a knife sharpening device (200), a knife replacement method and a knife replacement system (100). The knife sharpening device (200) comprises a control board (212) configured to connect an external network to the sharpening device (200). The method comprises the steps of: obtaining knife durability parameters (1002); obtain knife use information (1004); and defining compliance check data (1006). The knife replacement system (100) comprises the knife sharpening device (200) and a server (300) configured to obtaining knife durability parameters, obtain knife use information, and compare the knife use information with the knife durability parameters.

The tape measure has a tape, which is partially received within an interior of a housing. An attachment is fixedly attached with one side of the housing, and the attachment has an outer surface that faces away from the housing and that is provided with a knife sharpening material. The attachment allows a user to conveniently sharpen their knife without carrying around a separate sharpening stone.

A cutting tool, such as a kitchen knife, has a handle with an outer grip surface. A blade extends from a distal end of the handle along a central axis. The blade is formed of a metal material and has opposing first and second side surfaces that converge to a cutting edge having a plurality of continuous segments separated by a series of spaced-apart channels. Each channel is formed by an interior sidewall that extends into a body portion of the blade from the first side surface to the second side surface. Each of the channels has a channel width extending in a direction along the cutting edge, and a channel depth orthogonal to the channel width. The channels are formed using a cold forging operation on the first side surface to provide localized work hardened portions of the metal material adjacent the respective channels.

A cutting tool, such as a kitchen knife, has a handle with an outer grip surface. A blade extends from a distal end of the handle along a central axis. The blade is formed of a metal material and has opposing first and second side surfaces that converge to a cutting edge having a plurality of continuous segments separated by a series of spaced-apart channels. Each channel is formed by an interior sidewall that extends into a body portion of the blade from the first side surface to the second side surface. Each of the channels has a channel width extending in a direction along the cutting edge, and a channel depth orthogonal to the channel width. The channels are formed using a cold forging operation on the first side surface to provide localized work hardened portions of the metal material adjacent the respective channels.

A cutting tool, such as a kitchen knife, has a handle with an outer grip surface. A blade extends from a distal end of the handle along a central axis. The blade is formed of a metal material and has opposing first and second side surfaces that converge to a cutting edge having a plurality of continuous segments separated by a series of spaced-apart channels. Each channel is formed by an interior sidewall that extends into a body portion of the blade from the first side surface to the second side surface. Each of the channels has a channel width extending in a direction along the cutting edge, and a channel depth orthogonal to the channel width. The channels are formed using a cold forging operation on the first side surface to provide localized work hardened portions of the metal material adjacent the respective channels.

A handheld skate blade sharpening tool that has an automatically indexing, rotating sharpening stone that matches the concaved profile of the skate blade retained within a two-piece body member. Screws hold the two-piece body member together to keep the round sharpening stone sized to match the desired concave profile. The sharpening stone will remove metal to match the shape of the stone each time the sharpener is moved back and forth along the blade. The sharpening stone has gears on each end of the stone that match the gears inside the two-piece body. As the tool is moved along the skate blade, the sharpening stone will incrementally rotate within the body when the direction is changed in the reciprocating motion by the user's back and forth movement.

A grinder/polisher apparatus is disclosed, the apparatus comprising first and second sets of grinding elements (2, 3) facing each other under an angle () thus forming between the sets of grinding elements a V-groove in which the cutting edge of a knife is insertable for movement upon grinding, wherein the grinding elements are supported in holders (5, 6). The grinding elements (2, 3) are pivotally arranged in the holders (5, 6) about axes (R, R) the inclinations of which correspond with the opening angle () of the V-groove.

A modular honing guide system comprised of interchangeable parts, having a multitude of configurations for manually sharpening or honing a multitude of tool types used for, but not limited to wood carving, wood working, fine art printmaking, jewelry making and metal work. A plurality of edge tool clamps mountable to a universal honing guide base system. Tools are honed on planar abrading surface(s) in conjunction with a supporting honing guide base configuration moving across a work surface which is in parallel with an abrading surface or medium. Cancellation of thickness variation of individual abrading mediums, and elimination of variability of abrading surface height differentials relative to a work surface, for a plurality of abrading mediums, is provided. A multitude of bevel, skew and cutting edge profiles are attained. Resulting is a superior solution to honing guides having limited expandability and/or lacking in abrading medium thickness variation or height differential mitigation.

A modular honing guide system comprised of interchangeable parts, having a multitude of configurations for manually sharpening or honing a multitude of tool types used for, but not limited to wood carving, wood working, fine art printmaking, jewelry making and metal work. A plurality of edge tool clamps mountable to a universal honing guide base system. Tools are honed on planar abrading surface(s) in conjunction with a supporting honing guide base configuration moving across a work surface which is in parallel with an abrading surface or medium. Cancellation of thickness variation of individual abrading mediums, and elimination of variability of abrading surface height differentials relative to a work surface, for a plurality of abrading mediums, is provided. A multitude of bevel, skew and cutting edge profiles are attained. Resulting is a superior solution to honing guides having limited expandability and/or lacking in abrading medium thickness variation or height differential mitigation.

Described is an apparatus for finishing metallic and non-metallic surfaces by abrasion techniques. Described is an apparatus configured for finishing a zone on the surface of a bladed article of manufacture, wherein the apparatus comprises one or more channels having a cross-sectional profile including at least one finishing area to finish an operative zone of the article that optimizes a clearance portion of the article, wherein an angle of each finishing area of the cross-sectional profile is substantively the same as an optimal clearance angle of the article, wherein the apparatus is configured to position the operable zone of the article along the angle of the finishing area during sharpening.