An improved corner assembly for use with metal framed, floating panel glass doors, windows or wall partitions is provided. The design provides improved structural integrity of frame corner joints such that rail twist and frame racking are minimized. The design features a corner assembly composed of extruded horizontal and vertical framing members where the horizontal framing member is equipped with an integral tongue. The tongue engages a mating groove in the vertical framing member. The sheer block is attached to the horizontal and vertical framing members via mechanical fasteners. Welds are provided at the intersection of the tongue and groove, and between the sheer block and horizontal framing member to provide for increased structural integrity.