An ice maker assembly, comprising: an ice maker with a tray having a plurality of recesses; a frame body that is coupled to the tray, the frame body including a frame body stopper; a driving body that is rotatably coupled to the tray; and a processor that is operatively coupled to the driving body, wherein the tray comprises a metal material, a first flange, and a second flange, and further wherein the processor is configured to control the driving body to rotate the tray in a manner that flexes the tray to dislodge ice pieces formed in the recesses; wherein the processor is configured to control the driving body such that it: drives tray to a level position, where water is dispensed into the recesses and the water then freezes into ice pieces within the recesses; rotates tray in a first direction such that the second flange is raised in an upward direction toward frame body stopper and this rotational phase continues until the second flange begins to press on a bottom surface of the frame body stopper; continues to rotate tray in the first direction despite the fact that the second flange is pressing against frame body stopper, causing tray to twist and flexes in the first direction and causing some or all of the ice pieces formed in recesses to release from tray; characterized in that the driving body rotates tray in an opposite direction past 90 degrees to an upside- down position such that the first flange presses against a top surface of the frame body stopper, causing tray to flex against frame body stopper and cause some or all of the ice pieces to release from tray, thereby falling into a receptacle; and each of the plurality of recesses comprises an ice-phobic surface for direct contact with an ice piece formed in the recess and having a surface roughness (Ra) from 0.02 to 2 microns, and the metal material exhibits a fatigue limit greater than about 150 Megapascals (MPa) at 10 5 fatigue test cycles. an ice maker with a tray having a plurality of recesses; a frame body that is coupled to the tray, the frame body including a frame body stopper; a driving body that is rotatably coupled to the tray; and a processor that is operatively coupled to the driving body, wherein the tray comprises a metal material, a first flange, and a second flange, and further wherein the processor is configured to control the driving body to rotate the tray in a manner that flexes the tray to dislodge ice pieces formed in the recesses; wherein the processor is configured to control the driving body such that it: drives tray to a level position, where water is dispensed into the recesses and the water then freezes into ice pieces within the recesses; rotates tray in a first direction such that the second flange is raised in an upward direction toward frame body stopper and this rotational phase continues until the second flange begins to press on a bottom surface of the frame body stopper; continues to rotate tray in the first direction despite the fact that the second flange is pressing against frame body stopper, causing tray to twist and flexes in the first direction and causing some or all of the ice pieces formed in recesses to release from tray; characterized in that the driving body rotates tray in an opposite direction past 90 degrees to an upside- down position such that the first flange presses against a top surface of the frame body stopper, causing tray to flex against frame body stopper and cause some or all of the ice pieces to release from tray, thereby falling into a receptacle; and each of the plurality of recesses comprises an ice-phobic surface for direct contact with an ice piece formed in the recess and having a surface roughness (Ra) from 0.02 to 2 microns, and the metal material exhibits a fatigue limit greater than about 150 Megapascals (MPa) at 10 5 fatigue test cycles. drives tray to a level position, where water is dispensed into the recesses and the water then freezes into ice pieces within the recesses; rotates tray in a first direction such that the second flange is raised in an upward direction toward frame body stopper and this rotational phase continues until the second flange begins to press on a bottom surface of the frame body stopper; continues to rotate tray in the first direction despite the fact that the second flange is pressing against frame body stopper, causing tray to twist and flexes in the first direction and causing some or all of the ice pieces formed in recesses to release from tray; characterized in that the driving body rotates tray in an opposite direction past 90 degrees to an upside- down position such that the first flange presses against a top surface of the frame body stopper, causing tray to flex against frame body stopper and cause some or all of the ice pieces to release from tray, thereby falling into a receptacle; and each of the plurality of recesses comprises an ice-phobic surface for direct contact with an ice piece formed in the recess and having a surface roughness (Ra) from 0.02 to 2 microns, and the metal material exhibits a fatigue limit greater than about 150 Megapascals (MPa) at 10 5 fatigue test cycles.