A saw blade blank includes a body having an edge and an attachment portion formed on the body. The attachment portion is configured to connect to a power tool. A first portion of the edge is set in a first direction relative to the body. A second portion of the edge is set in a second direction opposite the first direction relative to the body. No cutting teeth are formed on the edge of the body.

A saw blade blank includes a body having an edge and an attachment portion formed on the body. The attachment portion is configured to connect to a power tool. A first portion of the edge is set in a first direction relative to the body. A second portion of the edge is set in a second direction opposite the first direction relative to the body. No cutting teeth are formed on the edge of the body.

A method of manufacturing a saw blade includes providing a saw blade body having an edge, forming a plurality of tooth bodies that defines a plurality of gullets in the saw blade body, coupling a cutting member to the edge of the saw blade body, and shaping the cutting member to form a cutting tooth after the cutting member is coupled to the edge. Each one of the plurality of tooth bodies defines an undercut portion positioned between adjacent tooth bodies. The cutting tooth includes a rake face extending from a tip of the cutting tooth toward the saw blade body and a relief face extending from the tip toward a second end of the cutting tooth sloping toward the saw blade body.

A method of manufacturing a saw blade includes providing a saw blade body having an edge, forming a plurality of tooth bodies that defines a plurality of gullets in the saw blade body, coupling a cutting member to the edge of the saw blade body, and shaping the cutting member to form a cutting tooth after the cutting member is coupled to the edge. Each one of the plurality of tooth bodies defines an undercut portion positioned between adjacent tooth bodies. The cutting tooth includes a rake face extending from a tip of the cutting tooth toward the saw blade body and a relief face extending from the tip toward a second end of the cutting tooth sloping toward the saw blade body.

An apparatus and methods are provided for a sawblade sharpener for extending the operating life of oscillating multi-tool sawblades. The sawblade sharpener comprises a first blade that includes a multiplicity of cutting teeth. A second blade is pivotally coupled with the second blade and includes a multiplicity of cutting teeth. The cutting teeth are configured to shear off a dulled cutting edge from the sawblade and form a new cutting edge, thereby providing a sharpened sawblade. The cutting teeth may have a size and shape suitable for forming any of course cutting teeth, medium cutting teeth, fine cutting teeth, or very fine cutting teeth, and the like. The sawblade sharpener may be operated by hand, such as by squeezing handles coupled with the first and second blades or may be configured to be mounted onto a tabletop or workbench and operated by way of a lever.

The invention proposes a tipped circular saw blade (10) comprising a saw body (11) with a peripheral circular region made of a first material, the peripheral circular region having a plurality of slots (12), and a plurality of tips (13) made of a second material, each tip (13) fixed to a respective slot (12) to form a saw tooth (14) defined between an anterior gullet (15) and a posterior gullet (16), each saw tooth (14) having a cutting edge (141). In accordance with the invention, each saw tooth (14) has a leading face (142) defined between the anterior gullet (15) and the cutting edge (141), the leading face (142) having a profile that includes a single curved surface formed by an R radius, the curved surface encompassing the first material and the second material. The invention further proposes a method of manufacturing a tipped circular saw blade (10), the method comprising a step of forming a saw body (11) with a peripheral circular region made of a first material, the peripheral circular region having a plurality of slots (12); a step of joining a plurality of prefabricated tips (13a), made of a second material, to the respective slots (12) of the peripheral region of the saw body (11), obtaining a preliminary tipped circular saw blade (10a); and a step of grinding the preliminary tipped circular saw blade (10a) to form a plurality of saw teeth (14), each saw tooth (14) defined between an anterior gullet (15) and a posterior gullet (16), and having a cutting edge (141) and a leading face (142) defined between the anterior gullet (15) and the cutting edge (141), the leading face (142) having a profile that includes a single curved surface formed by an R radius, the curved surface encompassing the first material and the second material.

A chainsaw cutting link (21) comprises: a base portion (29) provided with two rivets holes (20a, 20b) for pivotal inter-connection with adjacent links (13), and a cutting tooth (35) extending away from the base portion (29), wherein the cutting tooth (35) comprises a top plate (41) and a side plate (43) defining an angle to form an L-shaped cutting edge (45, 47, 49) facing in a cutting direction (B). The top plate (41) comprises a top plate cutting edge (45) which is sharper than at least a portion (53) of the side plate cutting edge (47).

A chainsaw cutting link (21) comprises: a base portion (29) provided with two rivets holes (20a, 20b) for pivotal inter-connection with adjacent links (13), and a cutting tooth (35) extending away from the base portion (29), wherein the cutting tooth (35) comprises a top plate (41) and a side plate (43) defining an angle to form an L-shaped cutting edge (45, 47, 49) facing in a cutting direction (B). The top plate (41) comprises a top plate cutting edge (45) which is sharper than at least a portion (53) of the side plate cutting edge (47).

A method of manufacturing a reciprocating saw blade includes forming a body with a shank end configured to secure the blade with a reciprocating saw, a plunging end configured to enter a workpiece, and a cutting edge and opposite back edge extending between the shank end and the plunging end. The cutting edge is formed to include a plurality of teeth arranged in a repeating pattern that includes left set teeth and right set teeth, the plurality of additional teeth being substantially the same size as each other and as the third tooth, wherein the plurality of additional gullets are substantially the same size as each other, and wherein the enlarged first gullet is longer in an axial direction than each of the plurality of additional gullets.

A method of manufacturing a reciprocating saw blade includes forming a body with a shank end configured to secure the blade with a reciprocating saw, a plunging end configured to enter a workpiece, and a cutting edge and opposite back edge extending between the shank end and the plunging end. The cutting edge is formed to include a plurality of teeth arranged in a repeating pattern that includes left set teeth and right set teeth, the plurality of additional teeth being substantially the same size as each other and as the third tooth, wherein the plurality of additional gullets are substantially the same size as each other, and wherein the enlarged first gullet is longer in an axial direction than each of the plurality of additional gullets.