Abrading jacket for human digit

A jacket fittable on a digit of a human hand for abrading a work piece and enhancing the ability of the digit to tractively grip the work piece, the jacket comprising:

• an elongate sleeve defining an opening at one end and being closed at an opposing end;
• a deformable nonplanar region on the jacket;
• an elongate, pliable panel extending from the one end;
• flat polygonal abrasive elements on the nonplanar region, the abrasive elements having distal surfaces faced away from the nonplanar region, proximal surfaces faced toward the nonplanar region, a first side connecting the proximal and distal surfaces and an opposing second side connecting the proximal and distal surfaces;
• sets formed by discrete groups of the abrasive elements, the abrasive elements in each of the sets being in overlapping positional relation such that part of the distal surfaces on some of the abrasive elements face toward part of the proximal surfaces of others of the abrasive elements;
• wherein the abrasive elements are oblique to the nonplanar region, the first sides of the abrasive elements are attached to the nonplanar region and the second sides of the abrasive elements are remote from the nonplanar region;
• edges on the second sides;
• wherein the edges in one of the sets are faced in a different direction along the nonplanar region than the edges in another of the sets.

A jacket fittable on a digit for abrading a work piece and allowing the digit to tractively grip the work piece, the jacket comprising:

• a sleeve defining an opening at one end;
• a deformable region on the jacket;
• an elongate panel extending from the one end;
• an array of spaced apart abrasive elements on the deformable region, the abrasive elements aligned in rows generally perpendicular to a longitudinal, translational axis of the sleeve, the rows defining therebetween inter rows gaps generally perpendicular to the longitudinal axis, the abrasive elements in each of the rows defining intra row gaps therebetween, the rows juxtaposed so the abrasive elements in a first row oppose the intra row gaps in a second row;
• edges of the abrasive elements spaced from the deformable region of the abrasive elements;
• wherein the abrasive elements are mobile relative to each other and are comprised of a layer of abrasive material and a substrate layer more resilient than the abrasive material, the substrate layer fixed to supporting the layer of abrasive material and connected to the deformable region.