FlipCut back-spotfacing and chamfering tools by Cogsdill Tool Products Inc. use over-center cam action to initiate positive mechanical closure of cutters, aided by centrifugal force. Cutters flip open for machining back spotfaces and back chamfers, then flip back to closed positions for removal. Refixturing and workpiece repositioning is not required, claims the manufacturer. Solid-carbide constructions, with increased mass, ensure improved centrifugal cutter movement. The shear angles of cutters direct chips away from arbor pockets for controlled chip evacuation.