A band saw blade includes a body part made into a loop in an endless form at a joint part formed by welding, a blade part formed on one edge side of the body part, a first shot blasted part formed on at least one side plane of the body part, a second shot blasted part formed in a part of the first shot blasted par and visually recognized as a range having a surface state different from a surface state of the first shot blasted part, and an information part that is provided to the second shot blasted part and from which information can be acquired.

A sawblade for a circular saw, including a round, disk-shaped core blade made from one or more parts, with a plurality of circumferentially distributed saw teeth being arranged at its external perimeter and with its center comprising a connection for fastening the sawblade at a driveshaft, and at least one side area of the core blade including open channels 7 for guiding liquids. A circular sawing machine having such a sawblade and a method for producing such a sawblade are also provided.

A method for manufacturing a continuous drill ring for a core drill bit is disclosed. The method includes forming at least two green compacts in layers in a direction of formation between a bottom side and a top side by successively applying powder layers containing a powder mixture and diamond layers containing diamond particles that are arranged in a set pattern. The green compacts are shaped into ring segments under the effect of pressure. The ring segments are joined in a circular manner and they are sintered under the effect of heat so as to obtain a continuous drill ring.

A saw blade for dicing a sheet of copper alloy to form individual resistors is disclosed, wherein the sheet of copper alloy has a thickness of less than 0.3 mm. The saw blade includes a ring having a first side, a second side, and a circumferential surface, wherein the thickness of the ring between the first side and the second side is less than 0.6 mm.

A cutting element is described which promotes the removal of material through friction, such as saw blades, cutting tools applied to milling machines, among others, said cutting element having retractors formed by the deposition of metal and/or carbides on the surface of said cutting element, replacing the conventionally used hard metal insert.

A circular saw blade for cutting construction materials. The rotary blade contains a central hole from which the central body extends. Peaked fingers are separated by gullets. The peaked fingers contain tooth supports which hold extended carbide teeth. The blade can be used to cut abrasive and sticky constructions materials with a circular saw.

A portable zero clearance circular saw including a motor frame portion with a transverse oriented drive shaft and arbor coupled to the drive shaft, a handle portion with a hand grip coupled to the motor frame portion aft end, a planar blade deck on a first lateral side, a movable blade shield rotatably mounted coaxial with the drive shaft and having a sidewall with a edge face coplanar with the blade deck, a trigger proximate the hand grip to move the blade shield, and a blade couplable to the drive shaft against the arbor, such that the blade outer surface is flush with the blade deck and blade shield sidewall. The handle portion may be rotatably coupled to the motor frame portion, and may include two laterally disposed blade shield triggers operably coupled to the blade shield via a dual pulley system.

The invention relates to an interface between a knife and a knife holder, wherein the knife and the knife holder are designed such that the knife can be mounted on the knife holder in such a way that the knife is initially positioned on the knife holder in the axial direction, and then by rotating either the knife relative to the knife holder and/or the knife holder relative to the knife, the knife is locked on the knife holder with respect to the axial direction, wherein the knife has a single central fastening opening which is delimited by a knife edge region, and the knife holder has a fastening section for the fastening opening of the knife, which is delimited by a holder edge region.

A circular saw includes a circular disk-shaped body with an outer periphery having saw teeth separated by gullets and saw tooth tips at the saw teeth. The saw tooth tips have a saw kerf. At least one of the gullets has a radially innermost margin at a first radius. The body has a thickness discontinuity at a second radius, the second radius being at least equal to the first radius. The body has a first thickness adjacent to and radially outside of the thickness discontinuity and a second thickness adjacent to and radially inside of the thickness discontinuity. The second thickness is greater than the first thickness. The ratio of the difference between the second thickness and the first thickness, and the difference between the kerf and the first thickness is equal to or greater than 0.25.

A tool attachment, in particular hole saw, for a power tool having a driving axle that is drivable in oscillation. The tool attachment including a connecting device with which the tool attachment is attachable to the power tool such that the driving axle thereof and a tool axis essentially coincide. A work area has teeth, with the work area being at least partially circular in design and adjoining a hollow, cylindrical base. Openings are formed in the base, the openings constituting at least 60%, at least 80%, or at least 90% of the area of the base.