1. Liquid spray gun with manually rotatable frictionally retained air cap

2. Identify each person in the table as structurally, frictionally, or Cyclically unemployed

3. Synonyms for Abrasively include coarsely, erosively, grindingly, harshly, caustically, gratingly, roughly, corrosively, frictionally and mordantly

4. One preferred embodiment of the system employs an abrasive material (152) that is frictionally held on each edge to mounts (210, 220).

5. The intermediate layer and the second jacket provide increased impact resistance, cut-through resistance, and compressive strength, as well as increased resistance to abrasion and other frictionally induced damage.

6. A method of forming a recess in a surface of a substrate includes: providing an abrasive article comprising a structured abrasive member disposed along a peripheral surface of a support member, frictionally contacting the structured abrasive layer with a surface of a substrate, longitudinally advancing the structured abrasive layer relative to the surface of the substrate; and rotating at least one of the abrasive article or the substrate relative to the other around a rotational axis perpendicular to the surface of the substrate such that the structured abrasive layer maintains contact with and abrades the surface of the substrate.