A method of fabricating a polishing layer of a polishing pad includes successively depositing a plurality of layers with a 3D printer, each layer of the plurality of polishing layers deposited by ejecting a pad material precursor from a nozzle and solidifying the pad material precursor to form a solidified pad material.

A tool and a method of making the tool are disclosed. The tool includes a superabrasive compact, for example, a volume of silicon carbide diamond bonded composite, directly bonded to a tungsten carbide body during sintering. The green body may have a recess with a complementary shape to the superabrasive compact, whereby after inserting at least a part of the superabrasive compact within the recess and sintering, the tungsten carbide body and the recess shrink to form an interference fit therebetween.

A tool and a method of making the tool are disclosed. The tool includes a superabrasive compact, for example, a volume of silicon carbide diamond bonded composite, directly bonded to a tungsten carbide body during sintering. The green body may have a recess with a complementary shape to the superabrasive compact, whereby after inserting at least a part of the superabrasive compact within the recess and sintering, the tungsten carbide body and the recess shrink to form an interference fit therebetween.

Methods for manufacturing bonded abrasive articles, for example vitrified bonded grinding wheels. A bondable abrasive composition is prepared including abrasive particles, a binder medium and a gamma-pyrone pore inducing material, such as ethyl maltol. A precursor abrasive structure is formed from the composition. The gamma-pyrone pore inducing material is removed from the precursor abrasive structure to provide a porous precursor abrasive structure that is further processed to provide a bonded abrasive article. In some embodiments, the binder medium includes a vitreous bonding material, and the bonded abrasive article is a porous vitrified bonded grinding wheel.

Methods for manufacturing bonded abrasive articles, for example vitrified bonded grinding wheels. A bondable abrasive composition is prepared including abrasive particles, a binder medium and a gamma-pyrone pore inducing material, such as ethyl maltol. A precursor abrasive structure is formed from the composition. The gamma-pyrone pore inducing material is removed from the precursor abrasive structure to provide a porous precursor abrasive structure that is further processed to provide a bonded abrasive article. In some embodiments, the binder medium includes a vitreous bonding material, and the bonded abrasive article is a porous vitrified bonded grinding wheel.

A nonwoven abrasive wheel includes a nonwoven abrasive body having opposed first and second major surfaces and a moisture barrier layer arranged on at least one of the first and second major surfaces. Methods of making are also described.

An abrasive article including a substrate; and an abrasive layer overlying the substrate, where the abrasive layer includes a blend of abrasive particles including a first type of abrasive particle comprising a polycrystalline material and having a first average friability F.sub.1, and a second type of abrasive particle comprising a polycrystalline material and having a second average friability, F.sub.2, where the blend comprises an average friability difference, ΔF=|F.sub.1−F.sub.2|, within a range of at least 0.5% to not greater than 80%.

A super hard polycrystalline construction comprises a body of polycrystalline super hard material, said body having an exposed working surface, a substrate attached to the body of polycrystalline super hard material along an interface and a plurality of apertures or channels. One or more of said apertures or channels extend(s) from the exposed working surface of the body into the substrate.

Coated abrasive articles having spacer particles are formed by providing a production tool having a dispensing surface with a plurality of cavities, guiding the production tool past an abrasive particle feeder, dispensing shaped abrasive particles onto the dispensing surface and into the plurality of cavities of the production tool, guiding a resin coated backing sheet adjacent the production tool past a spacer particle feeder, and dispensing spacer particles onto the resin coated backing sheet and/or the production tool after the abrasive particle feeder prior to a deposit point for the shaped abrasive particles. The spacer particles are selected to have a thickness that is greater than a thickness of a resin coating of the resin coating backing sheet and a thickness and density once dispensed that are sufficient to substantially prevent the production tool from contacting the resin coated backing sheet at the deposit point.

The present disclosure provides systems, devices, and methods for abrasive articles and manufacturing the same. A method includes receiving, at a shaped abrasive particle placement tool comprising cavities (1020), shaped abrasive particles (502, 504), determining whether a threshold number of cavities of the cavities (1020) includes a shaped abrasive particle situated properly therein, in response to determining there is not a threshold number of cavities of the cavities (1020) with a shaped abrasive particle (502, 504) situated properly therein, receiving, at the shaped abrasive particle placement tool, further shaped abrasive particles, and in response to determining that at least the threshold number of cavities of the cavities (1020) includes a shaped abrasive particle (502, 504) of the shaped abrasive particles situated properly therein, releasing the shaped abrasive particles (502, 504) from the shaped abrasive particle placement tool into a binding material (508) on a substrate (506) to adhere the shaped abrasive particles (502, 504) to the substrate (506).