A grinding tool includes a substrate having a surface provided with a plurality of openings, and a plurality of grinding studs. Each of the grinding studs includes a stud portion and an abrasive particle attached to each other, the stud portions being respectively attached into the openings, and the abrasive particles protruding outward from the surface, each of the abrasive particles having a pattern cut across a tip thereof to define multiple apexes adjacent to one another. In some embodiments, methods of fabricating a grinding tool are also described.

Polishing pad for use with high-speed mechanical buffers or for use by hand. More specifically, a sloped polishing pad and methods of use for the polishing pad, the sloped polishing pad having a sloped foam pad, and having a cloth, a foam, or both attached to a top surface of the foam pad, with the cloth, the foam, or both covering part of the top surface of the sloped foam pad such that gaps in the coverage allow for the sloped foam pad and either the cloth, the foam, or both to touch a polishing surface at the same time.

A method is disclosed for treating or maintaining a hard surface comprising a stone or stone-like material, the method comprising treatment of the surface with a flexible pad, in the presence of abrasive particles, bonded to the pad, on a contact surface between the pad and the hard surface, wherein the abrasive particles comprise diamond particles, and the treatment is performed in the absence of an effective amount of crystallization agent on the contact surface. The treatment is performed on a substantially regular basis, such as daily, weekly or monthly, and the treatment is performed using a pad comprising an open, lofty, three dimensional non-woven webs of fibers. A tool for use in the method is also provided, as well as a floor-surfacing machine comprising such a tool and a method for manufacturing such a tool. Furthermore, methods for treating or maintaining hard, smooth surfaces such as wood, polymer material, lacquer, linoleum, gelcoat, glass and automotive enamel are disclosed.

A device for polishing metallic workpiece surfaces. The device includes a tool holder which can be exchangeably fitted into a rotationally driven working spindle of a program-controlled milling machine, and a polishing tool, which is fastened in the tool holder. The device also includes a tool shank and a polishing head at the free end thereof, and is coupled to a polishing agent supply which arrives at the effective surface of the polishing head. The tool shank contains a chamber, which can admit a pressure medium and is at least partially filled with the polishing agent, wherein this chamber is in connection with the polishing head by way of a channel and wherein the polishing head has polishing agent permeable material or it contains passages for the polishing agent that is forced out of the chamber.

A weather-resistant polishing pad, including an upper layer operating for polishing, a buffer layer, and a transparent base. The buffer layer is disposed between the upper layer and the transparent base, and the upper layer, the buffer layer, and the transparent base are bonded via a pressure sensitive adhesive or an adhesive agent. The upper layer includes a weather-resistant polyurethane prepolymer, a curing agent, and a functional filler. The polyurethane prepolymer is a polymerization product of polyol and polyfunctional isocyanate. The polyfunctional isocyanate includes a first isocyanate containing no benzene ring, or the first isocyanate having an isocyanato group and a benzene group, and the isocyanato group and the benzene group are connected indirectly.

A grinding-disc device for power tools has an outer cover, a grinding tray and a grinding element. The outer cover has a casing and a mounting tube. The casing has a chamber, a connecting tube, at least one engaging hole and at least one engaging arm. The mounting tube is connected to the connecting tube. The grinding tray is detachably connected to the outer cover and has a body and at least one engaging element. The body is mounted below the casing and has a tube seat and a connecting board. The at least one engaging element is formed on the body, engages the at least one engaging arm to hold the grinding tray with the outer cover, and each one of the at least one engaging element has an engaging hook. The grinding element is detachably connected to the grinding tray below the outer cover.

A method of abrading the surface of a workpiece is disclosed. The method includes providing a workpiece, an abrading apparatus with a backing pad configured to receive an abrading plate, an abrading plate attachable to the backing pad and a slurry including abrasive grains; attaching the abrading plate to the backing pad; providing the slurry including abrasive grains between the abrading plate and the surface of the workpiece; and operating the abrading apparatus to abrade the surface of the workpiece. Therein, the abrading plate includes a workpiece-facing layer, which workpiece-facing layer faces the surface of the workpiece and includes a metal or a polymer, and the abrasive grains have a hardness on the Mohs scale of greater than 5.

Provided are buffing pads that have intertwined seams such that any hard or unyielding edges are covered and not exposed during a buffing or polishing process. A double-sided buffing pad for polishing surfaces comprises a backing plate; two fibrous buffing media with filaments of textiles extending therefrom that are affixed one media to each face of the backing plate; and a seam that is intertwined by a portion of the filaments from each media are intertwined. The filaments may be intertwined by needle-tacking, air entanglement, or hydro-entanglement.

A buffing pad assembly having a buffing pad, an attachment means, and an insert (e.g., plastic ring) is provided. In one embodiment, a channel is cut into a side of the buffing pad, creating first and second side portions. The attachment means is then affixed (glued) to a back surface of the buffing pad and the insert is centered on an upper surface of the attachment means. The insert is then heated, affixing it to the upper surface of the attachment means. The insert is then deformed (while it is still pliable) into an L-shape, forming a cavity on the backside of the buffing pad assembly. And because the insert is affixed to the attachment means, and the attachment means is affixed to the buffing pad, deforming the insert results in deforming the back surface of the buffing pad, while maintaining a flat front surface.