Methods and apparatus are provided for modifying a free electron laser to produce a non-diverging laser beam. An outer via and an inner via are formed within the board. The peripheral channel receives the front lens and the rear lens is positioned rearward of the channel so that the aperture receives the lens assembly. With this linear ball bearing, the guide shaft can be slid in the coupling hollow smoothly. The reduced mass web member has a corresponding reduced effective cross section to substantially reduce the component weight without adversely affecting its vertical stiffness.