Power saws and features for power saws are disclosed. Various features are particularly relevant to jobsite or benchtop table saws. Such features include a frame or support structure with panels and shaped or bent tubes, a trunnion formed from a shaped tube, a tilt mechanism, an elevation mechanism, a retraction mechanism, an arbor block retention mechanism, an insert, a fence, dust collection, shrouding, and a fence stop.

A table saw includes a support arrangement and a table top assembly including a work piece support surface defining a plane and a saw blade opening in the work piece support surface. An undercarriage assembly, mounted to the table top assembly, supports a saw blade in an adjustable angular position and includes a motor assembly and an arbor shaft to support the saw blade in the saw blade opening. The bevel pivoting mechanism is configured to increase a distance between the motor or arbor shaft and the plane of the work piece support surface with a change to the angular position of the saw blade to substantially prevent the motor or arbor from contacting the table top assembly.

A table saw includes a height adjustment wheel including a threaded shaft; a blade suspension mechanism secured to a lock crank; a rod secured to both the blade suspension mechanism and a bottom of the cutting surface; an electric motor including a driving shaft and a link extending forward to secure to the blade suspension mechanism; a circular saw blade operatively connected to the driving shaft; first and second mounting plates each secured to the link and including a slanted slot element; and an interconnection including two end holes moveably disposed in the slot elements of the first and second mounting plates respectively, and an intermediate threaded hole secured to the threaded shaft. A rotation of the height adjustment wheel moves the saw blade up or down.

Table saws and table saws designed to incorporate safety systems are disclosed. The table saws may include vertical slide elevation mechanisms positioned toward the rear of the saw and constructed so that an arbor block and blade can retract when a safety system detects an unsafe condition. Other table saw parts and components are also disclosed.

A dustless table saw with a built-in dust collection system is disclosed. The table saw uses a soft foldable seal to seal the gap between the blade slot and the blade housing, the blade housing has an internal extraction channel to maximize the dust collection. Another variation of the table saw utilizes a U-shaped blade housing with a divider. The table saw has a built-in raising/lowering mechanism to raise/lower the blade, and a built-in tilting mechanism to tile the blade. The table saw also utilizes an anti-dust blade guard to optimize the dust extraction.

Improvements to a table saw include a system for automatically adjusting the height of the cutting blade in relation to the height of the workpiece, a system for providing fine adjustment of the height or bevel angle of the saw blade or work surface, and a system for automatic speed control and shut-off for the saw blade.

A multiple blade table saw for use with a tool attachment assembly enables a user to perform different woodworking tasks simultaneously on plywood to enhance efficiency. The table saw assembly includes a housing to store a blade assembly having a plurality of blades operably connected to a motor, a tabletop coupled to a top of the housing and having a first slot and a second slot, the first slot able to permit portions of the plurality of blades to extend therethrough to be exposed above the tabletop, and a carriage slidably mounted to the housing and able to secure the tool attachment assembly. The tool attachment assembly includes a cutting member that is positioned within the second slot of the tabletop. The user maneuvers a plywood sheet on the tabletop to permit the blade assembly and cutting member to cut the plywood sheet.

Elevation mechanisms for table saws and anti-backdrive mechanisms for use in elevation mechanisms for table saws are disclosed. The anti-backdrive mechanisms typically include three sub-assemblies: an input assembly, an output assembly, and a fixed assembly. The anti-backdrive mechanisms prevent a torque related to the output assembly from changing the blade elevation. For example, the weight of the blade and the structure supporting the blade is prevented from backdriving the elevation mechanism and allowing the blade to drop.

Improvements to a table saw include a system for automatically adjusting the height of the cutting blade in relation to the height of the workpiece, a system for providing fine adjustment of the height or bevel angle of the saw blade or work surface, and a system for automatic speed control and shut-off for the saw blade.

A sawing apparatus for sawing workpieces of wood or plastic material has an adjustable frame part and a drive motor. A circular saw blade is operatively connected to the drive motor and drivable in rotation by the drive motor about an axis of rotation of the circular saw blade. The circular saw blade is adjustable from a ready position into a working position. The ready position is selected as a function of a position of the adjustable frame part such that the circular saw blade carries out a minimized angular travel as working travel during sawing. The adjustable frame part is adjustable at least in a vertical direction and/or in a horizontal direction transverse to the axis of rotation of the circular saw blade as a function of a cross-section of a workpiece to be sawed.