Method of using a robotic tender for tending a CNC machine , comprising the steps of: providing a part gripping jaw configured to grip a part , said part gripping jaw comprised of at least a left jaw and a right jaw , said part gripping jaw having a first side and a second side , with said part gripping jaw having defined therein a part gripping profile on said first side , configured to grip a part when at least said left and right jaws are activated, wherein said part gripping jaw includes a third side generally perpendicular to said first side ; providing a robotic arm with an End of Arm Tool , hereafter named EOAT, configured to engage said part gripping jaw , with said EOAT capable of moving said left and right jaws together or apart, in order to grip a part in said part gripping profile , wherein said EOAT is configured to engage said part gripping jaw at said third side such that said EOAT grips said part gripping jaw at a perpendicular orientation to the surface of said part gripping jaw configured to grip a part; placing a part to be machined in said part gripping jaw in position for pickup by said robotic arm ; engaging said part gripping jaw at said third side with said EOAT ; moving said left and right jaws into a securing position by action of said EOAT , thereby gripping said part ; lifting said part by movement of said robotic arm ; moving said part gripping jaw and gripped part to a vise of said CNC machine , and engaging said part gripping jaw with attached part in said vise ; disengaging said EOAT from said part gripping jaw and removing said EOAT from said CNC machine ; and processing said part in said CNC machine . providing a part gripping jaw configured to grip a part , said part gripping jaw comprised of at least a left jaw and a right jaw , said part gripping jaw having a first side and a second side , with said part gripping jaw having defined therein a part gripping profile on said first side , configured to grip a part when at least said left and right jaws are activated, wherein said part gripping jaw includes a third side generally perpendicular to said first side ; providing a robotic arm with an End of Arm Tool , hereafter named EOAT, configured to engage said part gripping jaw , with said EOAT capable of moving said left and right jaws together or apart, in order to grip a part in said part gripping profile , wherein said EOAT is configured to engage said part gripping jaw at said third side such that said EOAT grips said part gripping jaw at a perpendicular orientation to the surface of said part gripping jaw configured to grip a part; placing a part to be machined in said part gripping jaw in position for pickup by said robotic arm ; engaging said part gripping jaw at said third side with said EOAT ; moving said left and right jaws into a securing position by action of said EOAT , thereby gripping said part ; lifting said part by movement of said robotic arm ; moving said part gripping jaw and gripped part to a vise of said CNC machine , and engaging said part gripping jaw with attached part in said vise ; disengaging said EOAT from said part gripping jaw and removing said EOAT from said CNC machine ; and processing said part in said CNC machine . <EOS>