A power tool for forming a channel in a work surface includes a first section carrying a rotatable shaft having a shaft axis and a second section that engages the work surface; a cutting disc having a substantially circular blade provided on the rotatable shaft; a first support portion on one side of the cutting disc and a second support portion on the opposite side of the cutting disc which cooperate to hold the cutting disc at an oblique angle relative to the shaft axis. A first locking feature of the first support portion and a second locking feature of the second support portion extend through a circular opening of the cutting disc and cooperate to resist relative rotation of the first and second support portions. The first section is movable relative to the second section to move the cutting disc into and out of engagement with the work surface.

An improved deck fastener removal tool comprising a fixture with an extended handle to hold the cutting blade of an angle grinder or like tool in plane with the top of the joist and removed a safe distance away from the operator's body. The handle may be extendable and adjustable to render it comfortable for use by multiple operators. The fixture utilizes a series of guards to ensure that the cutting blade remains level with the top of the joist along the entire length thereof, allowing the operator to walk steadily along the top of or next to the joist to quickly and safely remove each residual fastener protruding therefrom. An integrated collection tray automatically gathers the severed portions of the fasteners as they are cut.

A power tool for forming a channel in a work surface includes a first section carrying a rotatable shaft having a shaft axis and a second section that engages the work surface; a cutting disc having a substantially circular blade provided on the rotatable shaft; a first support portion on one side of the cutting disc and a second support portion on the opposite side of the cutting disc which cooperate to hold the cutting disc at an oblique angle relative to the shaft axis. A first locking feature of the first support portion and a second locking feature of the second support portion extend through a circular opening of the cutting disc and cooperate to resist relative rotation of the first and second support portions. The first section is movable relative to the second section to move the cutting disc into and out of engagement with the work surface.