The invention relates to apparatus for polishing a running base that comprises a blade with two opposing blade edges separated one from the other by an intermediate section; the polishing apparatus comprising: a support body, and blade alignment guide means; wherein the support body is capable of carrying a polishing surface which comprises: a profile which is adapted to conform with one or more portions of the intermediate section; and wherein the blade alignment guide means comprise one or more pairs of first and second blade alignment guides, which first and second blade alignment guides in each pair are separated from each other by the polishing surface, and further wherein the blade alignment guide means is adapted to receive and/or guide and/or constrain a running base so that when the intermediate section between the two edges of the running base is brought into contact with the polishing surface, there is no contact between the polishing surface and any part of the two opposing blade edges of the running base.

The invention relates to apparatus for polishing a running base that comprises a blade with two opposing blade edges separated one from the other by an intermediate section; the polishing apparatus comprising: a support body, and blade alignment guide means; wherein the support body is capable of carrying a polishing surface which comprises: a profile which is adapted to conform with one or more portions of the intermediate section; and wherein the blade alignment guide means comprise one or more pairs of first and second blade alignment guides, which first and second blade alignment guides in each pair are separated from each other by the polishing surface, and further wherein the blade alignment guide means is adapted to receive and/or guide and/or constrain a running base so that when the intermediate section between the two edges of the running base is brought into contact with the polishing surface, there is no contact between the polishing surface and any part of the two opposing blade edges of the running base.

The present invention is a three dimensionally printed sharpening tool with diamond abrasive and method of making. The diamond-polymer resin composite tool is shapeable and personalizeable with printed imbedded logos for brand specific manufacturing which co-function as embedded dimension specific markers in multiple layers enabling a single tool to provide sharpening, lapping and polishing in a single operation.

The present invention is a three dimensionally printed sharpening tool with diamond abrasive and method of making. The diamond-polymer resin composite tool is shapeable and personalizeable with printed imbedded logos for brand specific manufacturing which co-function as embedded dimension specific markers in multiple layers enabling a single tool to provide sharpening, lapping and polishing in a single operation.

An acute angle blade sharpening apparatus and method for sharpening blades is configured to sharpen the edge and bevel of a blade at the specific acute angles between 21° and 23°, or about 22° and 23°. The apparatus has a base member forming multiple elongated depressions oriented at 22° and 23°. Multiple elongated sharpening members are fixedly mounted in the depressions. The blade is oriented perpendicular to the first side of the base member and drawn against the sharpening members, to engage at the desired 22° and 23° sharpening angles. A leveling instrument attaches to the blade to verify the blade is oriented at the desired angles. A leveling instrument cavity stores the leveling instrument and fastener. Springs retain the sharpening members in the cavity of the base member when not in use. A clamp fastens the base member to a mounting surface for enhanced stability.

An adjustable sharpener including a body having two sharpening slots, a first arm with a first abrasive element connected to a second arm with a second abrasive element, and a third arm with a third abrasive element connected to a fourth arm with a fourth abrasive element. The first and second abrasive elements are positioned in the first sharpening slot, and the third and fourth abrasive elements are positioned in the second sharpening slot. The adjustable sharpener also includes an adjuster connected to the body and an adjustment assembly connected to the adjuster, the first arm and the third arm. Linear movement of the adjuster causes rotational movement of the first arm and the third arm. In this regard, the adjuster allows the user to manually increase or decrease the sharpening angle between the abrasive elements in the sharpening slots.

An adjustable sharpener including a body having two sharpening slots, a first arm with a first abrasive element connected to a second arm with a second abrasive element, and a third arm with a third abrasive element connected to a fourth arm with a fourth abrasive element. The first and second abrasive elements are positioned in the first sharpening slot, and the third and fourth abrasive elements are positioned in the second sharpening slot. The adjustable sharpener also includes an adjuster connected to the body and an adjustment assembly connected to the adjuster, the first arm and the third arm. Linear movement of the adjuster causes rotational movement of the first arm and the third arm. In this regard, the adjuster allows the user to manually increase or decrease the sharpening angle between the abrasive elements in the sharpening slots.

An adjustable sharpener including a body having two sharpening slots, a first arm with a first abrasive element connected to a second arm with a second abrasive element, and a third arm with a third abrasive element connected to a fourth arm with a fourth abrasive element. The first and second abrasive elements are positioned in the first sharpening slot, and the third and fourth abrasive elements are positioned in the second sharpening slot. The adjustable sharpener also includes an adjuster connected to the body and an adjustment assembly connected to the adjuster, the first arm and the third arm. Linear movement of the adjuster causes rotational movement of the first arm and the third arm. In this regard, the adjuster allows the user to manually increase or decrease the sharpening angle between the abrasive elements in the sharpening slots.

An adjustable sharpener including a body having two sharpening slots, a first arm with a first abrasive element connected to a second arm with a second abrasive element, and a third arm with a third abrasive element connected to a fourth arm with a fourth abrasive element. The first and second abrasive elements are positioned in the first sharpening slot, and the third and fourth abrasive elements are positioned in the second sharpening slot. The adjustable sharpener also includes an adjuster connected to the body and an adjustment assembly connected to the adjuster, the first arm and the third arm. Linear movement of the adjuster causes rotational movement of the first arm and the third arm. In this regard, the adjuster allows the user to manually increase or decrease the sharpening angle between the abrasive elements in the sharpening slots.

A sharpening device is provided that can precisely adjust the angle of sharpening stones for use in a variety of ways and with many different types of knives and tools. The sharpening device has a first holder and a second holder positioned in a base. The first holder, the second holder, and the base may have respective pluralities of apertures, where a single aperture of the holder is aligned with a single aperture of the base at any given time. The first holder and the second holder may include indicia that align with respective apertures of the base. The base may include an angle gauge with a pointer, where the first holder or the second holder may be coupled to each other and/or to the pointer via geared surfaces. The sharpening device may include an actuatable thumb wheel, a base stand, safety rods, and/or securing components.