For this process, the operator pre-bends a piece of 1 mm thick ShapeWire. Once ready and mounted on the ShapeWire Bar, the operator prepares a simple tool-path type of file consisting of a straight revolution axis and the entry and exit lines which tell the cutter where the ShapeWire is to enter and exit the material. To obtain twisted shapes, the required rotation is set in hot wire CNC foam machine software. This process is used to cut groove columns, spirals, threads, and similar types of objects .