Abstract: A cutting machine (A) simultaneously cuts an elongate workpiece (a) into one or more building products, wherein each product is of a predetermined length. The machine includes a frame or foundation (1), which supports an input or carry-in conveyor (2) for conveying the workpiece along a first path of travel. The machine further includes a plurality of cutting mechanisms (3), (5), (6), and (7) and a feed mechanism (12) supported on the frame. At least some of the cutting mechanisms are movably mounted on the frame for selectively adjusting the spacing between adjacent cutting mechanisms for cutting the workpiece into products of predetermined length or lengths. The feed mechanism receives the workpiece from the input conveyor and moves the workpiece along a second path of travel until the workpiece contacts the cutting mechanisms, thereby cutting the workpiece.