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.

An attachment for a drill comprises a shank with a chuck configured to mount the attachment to the drill. A housing on the shank comprises a threaded end and a hollow chamber. A compression bladder having a tubular opening through it is configured to be inserted into the hollow chamber. A tube comprising a sanding or cleaning surface located on the inner surface of the tube is configured to be insertable into the tubular opening of the compression bladder. A threaded lid having a circular opening that is at least the same diameter as the inner diameter of the tube is configured to mount onto the housing at the threaded end and compress the compression bladder thereby reducing the diameter of the tubular opening and compressing the compression bladder against the tube to secure the tube within the housing.

An attachment for a drill comprises a shank with a chuck configured to mount the attachment to the drill. A housing on the shank comprises a threaded end and a hollow chamber. A compression bladder having a tubular opening through it is configured to be inserted into the hollow chamber. A tube comprising a sanding or cleaning surface located on the inner surface of the tube is configured to be insertable into the tubular opening of the compression bladder. A threaded lid having a circular opening that is at least the same diameter as the inner diameter of the tube is configured to mount onto the housing at the threaded end and compress the compression bladder thereby reducing the diameter of the tubular opening and compressing the compression bladder against the tube to secure the tube within the housing.

An abrasive tool can include a bonded abrasive including a body and a barrier layer bonded to a major surface of the body. The body can include abrasive particles contained within a bond material. The barrier material can include a metal-containing film. In an embodiment, the barrier layer may further include a polymer-containing film. In another embodiment, the barrier layer may include a biaxially oriented material. The abrasive tool may be formed such that the barrier layer is formed in-situ with the formation of the bonded abrasive.

A grinding disc includes an inner layer (20) which is made of grindable material (containing abrasive particles) and an outer layer (20) which covers at least a portion of the surface of the inner layer (50) and which is made of non-grindable material (i.e. not-containing abrasive grain).

A grinding disc includes an inner layer (20) which is made of grindable material (containing abrasive particles) and an outer layer (20) which covers at least a portion of the surface of the inner layer (50) and which is made of non-grindable material (i.e. not-containing abrasive grain).

An apparatus may include a grinder blade for flush cutting concrete, the grinder blade comprising: a distal side that defines a flush cutting plane and a proximal side opposite the distal side, and a locking hub receiver section unitarily formed from the grinder blade at a center portion and extending from the grinder blade a proximal direction to receive a locking hub with a plurality of fasteners disposed proximally to the grinder blade to secure the locking hub against the grinder blade.

An apparatus may include a grinder blade for flush cutting concrete, the grinder blade comprising: a distal side that defines a flush cutting plane and a proximal side opposite the distal side, and a locking hub receiver section unitarily formed from the grinder blade at a center portion and extending from the grinder blade a proximal direction to receive a locking hub with a plurality of fasteners disposed proximally to the grinder blade to secure the locking hub against the grinder blade.

The present invention relates generally to fixed abrasive articles comprising: abrasive particles; a binder composition; and an abrasive performance enhancing composition, wherein the abrasive particles are disposed on or in the binder composition, and wherein the abrasive performance enhancing composition is disposed overlying the abrasive particles or binder composition or both. The abrasive performance enhancing composition comprises a mixture comprising a lubricant and an anti-wear agent. In particular embodiments the abrasive performance enhancing composition further comprises a fixative material.