A method is provided for making a transformer core assembly using a work table positioned proximate to a rotatable rack assembly having first and second racks. Core segments are created by a segment forming machine. The core segments are transferred to a core block of the second rack. After a predetermined number of core segments are stacked on the core block to form a core segment assembly, the rack assembly is rotated so that the second rack is positioned proximate to the work table. The second rack is then moved onto the work table and one or more finishing steps are performed on the core segment assembly. During the performance of the one or more finishing steps, core segments may be transferred to a core block attached to the first rack.