A dust coupler adapted to different dust outlet tubes has a collecting pipe connector and an elastic sheathing element. The collecting pipe connector has a first end and a second end being opposite to each other. The first end is configured to be inserted into a collecting pipe of a dust collection system for woodworking. The elastic sheathing element is connected to the second end of the collecting pipe connector, has a mouth, and is configured to be elastically sheathed onto a dust outlet tube of a woodworking machine. A woodworker first mounts the dust coupler on the collecting pipe, and the collecting pipe can be combined with any one of different dust outlet tubes of different woodworking machines having different sizes via the dust coupler. The dust coupler allows the collecting pipe to be quickly combined with or detached from the dust outlet tube.

A dust coupler adapted to different dust outlet tubes has a collecting pipe connector and an elastic sheathing element. The collecting pipe connector has a first end and a second end being opposite to each other. The first end is configured to be inserted into a collecting pipe of a dust collection system for woodworking. The elastic sheathing element is connected to the second end of the collecting pipe connector, has a mouth, and is configured to be elastically sheathed onto a dust outlet tube of a woodworking machine. A woodworker first mounts the dust coupler on the collecting pipe, and the collecting pipe can be combined with any one of different dust outlet tubes of different woodworking machines having different sizes via the dust coupler. The dust coupler allows the collecting pipe to be quickly combined with or detached from the dust outlet tube.

Provided is an electric cutting machine with a dust control function, capable of collecting dust generated during processing concrete or stone materials without deteriorating cutting ability and dust collection ability under various working conditions, mounted with a cutting position designation guide of excellent visibility and usability. An electric cutting machine with a dust control function, comprising; an electric cutting machine 3 for driving a rotary blade 2 by a built-in motor; a cover 4 for covering a part of the rotary blade 2; a dust discharge duct 73 leading from inside to the outside of the cover 4; and a base 18 rotatably mounted on the cover 4, a bottom face of the base 18 sliding on a surface of a work material 76 during a cutting operation, wherein a guide 26 is provided on a front-most portion in a cutting direction of the cover in a state of being biased to be kept in parallel to the bottom face of the base 18, the guide being vertically tiltable and having an indicator portion 30 indicating a cutting position of the rotary blade 2.

Provided is an electric cutting machine with a dust control function, capable of collecting dust generated during processing concrete or stone materials without deteriorating cutting ability and dust collection ability under various working conditions, mounted with a cutting position designation guide of excellent visibility and usability. An electric cutting machine with a dust control function, comprising; an electric cutting machine 3 for driving a rotary blade 2 by a built-in motor; a cover 4 for covering a part of the rotary blade 2; a dust discharge duct 73 leading from inside to the outside of the cover 4; and a base 18 rotatably mounted on the cover 4, a bottom face of the base 18 sliding on a surface of a work material 76 during a cutting operation, wherein a guide 26 is provided on a front-most portion in a cutting direction of the cover in a state of being biased to be kept in parallel to the bottom face of the base 18, the guide being vertically tiltable and having an indicator portion 30 indicating a cutting position of the rotary blade 2.

A semi-automated wood-cutting machine includes a receiving/alignment stage adapted to receive a piece of wood, the receiving/alignment stage having an alignment aid adapted to facilitate manual alignment of the piece of wood, and a cutting stage spaced from the receiving/alignment stage, the cutting stage being configured to cut the piece of wood along a predetermined cut pathway.

A semi-automated wood-cutting machine includes a receiving/alignment stage adapted to receive a piece of wood, the receiving/alignment stage having an alignment aid adapted to facilitate manual alignment of the piece of wood, and a cutting stage spaced from the receiving/alignment stage, the cutting stage being configured to cut the piece of wood along a predetermined cut pathway.

A system and method for making new dust collectors or modifying existing dust collectors includes a containment chamber underneath the bottom exit of a dust collector unit and an independent, unconnected debris container. A metal, plastic, or flexible material chute may be required to direct debris from the dust collector open bottom to the debris container. The containment chamber is equipped with a covered opening, e.g., door or hatch, of sufficient size to insert and remove the debris container. The system may be used with both positive and negative pressure systems. User benefits include lower handling costs and greater convenience in debris management. The system and method have wide application in woodworking operations, as well as, with other applications where particulate matter needs to be removed from an air stream.

A system and method for making new dust collectors or modifying existing dust collectors includes a containment chamber underneath the bottom exit of a dust collector unit and an independent, unconnected debris container. A metal, plastic, or flexible material chute may be required to direct debris from the dust collector open bottom to the debris container. The containment chamber is equipped with a covered opening, e.g., door or hatch, of sufficient size to insert and remove the debris container. The system may be used with both positive and negative pressure systems. User benefits include lower handling costs and greater convenience in debris management. The system and method have wide application in woodworking operations, as well as, with other applications where particulate matter needs to be removed from an air stream.

A chainsaw may include a saw chain; a guide bar, a sprocket, a prime mover, a housing, a sprocket cover, and a guide member. The guide bar, the housing and the sprocket cover may define a chain passage. The guide member may include a first facing surface having an arc shape centered on the rotation axis and a second facing surface having an arc shape centered on a position offset from the rotation axis. When the chainsaw is placed on a horizontal mounting surface and viewed in the direction along the rotation axis, an angle between (i) a straight line connecting the rotation axis and a position where the first facing surface and the second facing surface are connected and (ii) a horizontal plane may be in a range of 10 degrees to 25 degrees.

A chainsaw may include a saw chain; a guide bar, a sprocket, a prime mover, a housing, a sprocket cover, and a guide member. The guide bar, the housing and the sprocket cover may define a chain passage. The guide member may include a first facing surface having an arc shape centered on the rotation axis and a second facing surface having an arc shape centered on a position offset from the rotation axis. When the chainsaw is placed on a horizontal mounting surface and viewed in the direction along the rotation axis, an angle between (i) a straight line connecting the rotation axis and a position where the first facing surface and the second facing surface are connected and (ii) a horizontal plane may be in a range of 10 degrees to 25 degrees.