Methods and apparatus for making and using tools, for example concrete cutting blades. The tool includes a first layer and a second layer that are oppositely disposed. The first and second layers include working surfaces that support at least one working element when the working element is applied to a work piece. Additionally, an intermediate structure is included between the first and second layers. The intermediate structure can include a plurality of components extending in the area between the structural surfaces and the working surfaces.

A circular cutting blade is configured for cutting meat when turned about a rotation axis in a predetermined cutting direction. The cutting blade has a peripheral blade edge defined between the first and second sides and a plurality of circumferentially disposed cutting knives. Each cutting knife includes first and second knife sides and an arcuate knife edge that constitutes a portion of the peripheral blade edge. Each knife edge is titled and rises, relative to the rotation axis, between a first blade-edge location corresponding to a minor blade radius and a second blade-edge location corresponding to a major blade radius such that, when the circular blade is rotating in the predetermined cutting direction and cutting a work piece, the work piece first encounters the first blade-edge location of each cutting knife before encountering the second blade-edge location of that cutting knife.

A cutting blade, which is useable for cutting a reinforcing strip into reinforcing plies, includes one or more notches disposed at given intervals. When a volume of rubber separating two reinforcing threads is cut by the cutting blade, bridges of rubber are left between a rear edge of a first reinforcing ply and a front edge of a second reinforcing ply.

A circular cutting blade is configured for cutting meat when turned about a rotation axis in a predetermined cutting direction. The cutting blade has a peripheral blade edge defined between the first and second sides and a plurality of circumferentially disposed cutting knives. Each cutting knife includes first and second knife sides and an arcuate knife edge that constitutes a portion of the peripheral blade edge. Each knife edge is titled and rises, relative to the rotation axis, between a first blade-edge location corresponding to a minor blade radius and a second blade-edge location corresponding to a major blade radius such that, when the circular blade is rotating in the predetermined cutting direction and cutting a work piece, the work piece first encounters the first blade-edge location of each cutting knife before encountering the second blade-edge location of that cutting knife.

A cutting tool and cutter body assembly, including a disk-shaped cutter body and a plurality of support pads removably retained therein, the cutter body having an axis of rotation, two opposing end surfaces and a body peripheral surface extending therebetween. Each support pad intersects one of two annular-shaped planes equidistantly offset from opposite sides of a median plane perpendicular to the axis of rotation, and the cutter body intersects neither of the two annular-shaped planes. Each support pad is configured to make operative contact with a machined surface of a workpiece perpendicular to the axis of rotation. Each support pad has opposing upper and lower surfaces and a pad peripheral surface extending therebetween, the pad peripheral surface having an upper portion intersecting the upper surface, and the upper portion exhibiting N-fold rotational symmetry about a pad axis non-perpendicular to the lower surface.

A slitting tool configured for fine-tuning thereof includes basic body, which in turn includes a body portion and a cutting portion extending therefrom. The slitting tool includes a biasing screw which is seated in a biasing bore and is configured to adjust the position of the cutting portion. The biasing screw is configured to engage a biasing surface of the body portion to adjust the cutting portion's position. The biasing surface is oblique relative to the biasing screw for retarding movement of the biasing screw a fine-tuned position.

A log saw machine includes a first arm, a second arm parallel to the first arm, a shaft having a first end and an opposite second end, and a circular knife fixed on the shaft. The first end of the shaft is rotatably installed on the first arm. The second end of the shaft is rotatably installed on the second arm. The circular knife is positioned between the first and second arms, and the plane of the circular knife is parallel to the extending direction of the first and second arms.

A slitter according to an embodiment of the present art includes: an upper knife disposed above the electrode plate to rotate, thereby cutting the electrode plate; and a lower knife disposed below the electrode plate to partially overlap the upper knife and rotate, thereby cutting the electrode plate together with the upper knife, wherein the upper knife includes: a first inner surface extending to be inclined from a tip formed at the lowermost end to the lower knife; and an outer circumferential surface extending to be inclined from the tip to an opposite side of the lower knife, wherein the first inner surface has an inclination at a first angle from a vertical line V that is perpendicular to a rotation axis that serves as a rotation center of the upper knife, and the outer circumferential surface has an inclination at a second angle from the vertical line.