Recently we have been building a model servo motor in Pro-Engineer.  This will be printed out of plastic and used to house the laser pointer.  The plastic housing will have a circular hole in it that the pen laser pointer will slide through.   In figure 1 is the rough computer drawing of the servo that will eventually be sent to a 3-d plastic printer machine.  In figure 2 the actual servo motor used for the model is seen.

Figure 1

Figure 2