This part was stamped using a 3-station progressive GRIPflow® Tool. The material is 6061-0 Aluminum — 0.130” thick. Section “A” shows one of three ports that required coining the material to a precise shape — the opposite side of these exhaust ports have a “raised seat” used to create a seal against a flapper valve. The part is an exhaust valve plate used in a “pneumatic hand tool”. GRIPflow® was an economical alternate to “powdered-metal” or “metal casting” or “traditional stamping” (note: all three of these processes would have required secondary machining) due to the part’s complexities and tight tolerances.