Methods of making vitreous bond abrasive articles and their precursors using powder bed jetting are disclosed. Vitreous bond abrasive articles prepared by the method include abrasive articles having arcuate or tortuous cooling channels, unitary structured abrasive discs, abrasive segments, shaped abrasive particles, and abrasive wheels.

Methods of making vitreous bond abrasive articles and their precursors using powder bed jetting are disclosed. Vitreous bond abrasive articles prepared by the method include abrasive articles having arcuate or tortuous cooling channels, unitary structured abrasive discs, abrasive segments, shaped abrasive particles, and abrasive wheels.

A grinding wheel assembly for use in a sharpening system includes a grinding wheel configured to be mounted in the sharpening system to carry out sharpening operations in which the grinding wheel removes material from a blade to be sharpened, such as the blade of an ice skate. The grinding wheel assembly further includes an identification tag attached to the grinding wheel, the identification tag having (1) secure memory including a usage location for persistently and securely storing a usage tracking value, and (2) interface circuitry for engaging in communication with a transceiver of the sharpening system to enable electronic circuitry of the sharpening system to both read from and write to the usage location to track usage of the grinding wheel for sharpening operations. The memory may also store other data including user-specific system parameters usable to customize operation, and fault information usable to diagnose fault conditions.

A device for trimming that is safe for the operator, is lightweight (hand held), and is configured such that the trimming head does not overheat. In one embodiment, it is comprised of a trimming head and in a second embodiment, it is comprised of a shank and a trimmer head combination, the air holes being configured through the trimming head. A third embodiment allows for a device to be threaded onto the shaft of a motorized power device.

A device for trimming that is safe for the operator, is lightweight (hand held), and is configured such that the trimming head does not overheat. In one embodiment, it is comprised of a trimming head and in a second embodiment, it is comprised of a shank and a trimmer head combination, the air holes being configured through the trimming head.

A device for trimming that is safe for the operator, is lightweight (hand held), and is configured such that the trimming head does not overheat. In one embodiment, it is comprised of a trimming head and in a second embodiment, it is comprised of a shank and a trimmer head combination, the air holes being configured through the trimming head.

A device for trimming that is safe for the operator, is lightweight (hand held), and is configured such that the trimming head does not overheat. In one embodiment, it is comprised of a trimming head and in a second embodiment, it is comprised of a shank and a trimmer head combination, the air holes being configured through the trimming head. A third embodiment allows for a device to be mechanically attached onto the shaft of a motorized power device.

A device for trimming that is safe for the operator, is lightweight (hand held), and is configured such that the trimming head does not overheat. In one embodiment, it is comprised of a trimming head and in a second embodiment, it is comprised of a shank and a trimmer head combination, the air holes being configured through the trimming head. A third embodiment allows for a device to be mechanically attached onto the shaft of a motorized power device.

Apparatus for machining an object, the apparatus comprising: a wheel including; a first circular surface; a second circular surface oriented parallel to the first circular surface; a first rim surface extending from the first circular surface at a first edge, a gradient of the first rim surface having a radial component; and a second rim surface extending from the second circular surface at a second edge and towards the first rim surface, a gradient of the second rim surface having a radial component, the first edge defining a curved surface between the first circular surface and the first rim surface, and the second edge defining a curved surface between the second circular surface and the second rim surface.

Methods of maintaining toenails of an animal that include maintaining a toenail of the animal on a surface of a trimmer head, the trimmer head being circular in configuration and including a forward end having an outside edge of a radial configuration, a rearward end, and an outer surface including an abrasive material. Air is passed through the trimming head thereby cooling the trimming head while maintaining the toenails on the surface of the trimmer head. The toenail of the animal is trimmed by grinding the toenail with the abrasive material.