An ice maker assembly is provided that includes a tray having a plurality of ice-phobic recesses. The recesses may possess a total water volume of 70 cc or greater. The tray comprises metal material and can be formed with a substantially uniform strain distribution. The ice maker further includes a frame body coupled to the tray, a driving body that is rotatably coupled to the ice-forming tray, and a processor that is operatively coupled to the driving body. The processor controls the driving body to rotate the tray in a manner that flexes the tray to dislodge ice pieces formed in the recesses.