In a method and apparatus for forming a three-dimensional object and in particular to a method and apparatus for forming a three-dimensional beam, it is desirable to form three-dimensional beams having complex forms by using an efficient forming process for the beams which may be incorporated into existing high volume production techniques. In one aspect, the invention allows for determining whether models of optimization problems are infeasible. The auxiliary brake can be designed to exert an adjustable braking torque. The bypass orifices are enabled in the neutral position, but are substantially disabled in the first and second positions. The means for providing the pause frames is responsive to the increase of the occupancy of the memory above a selected watermark to cease the provision of the sequence of pause frames. A cutting board is selectively interchangeable with the grill body on the support stand.