Glass beads have been added to various forms of fiberglass reinforced plastic by many investigators [1-4], each of which have found specific advantages that have resulted from their addition. Ritter [1] said that the cost of glass spheres is less than half that of glass fibers, making them one of the most economical glass fillers available, while Potter's [2] bulletin No. T24-1 reporting on tests by De Bell and Richardson, gives data confirming that the use of glass spheres as an addition to fiberglass reinforced thermoplastics can improve physical properties, reduce cost, and solve production problems. Wells [3] in a preliminary investigation showed clearly that glass bead addition rather than powdered filler resulted in improved flow or viscosity characteristics at the same loading values, which should permit higher fiber loading than would be possible with random shaped particles. His work was performed with chopp strand mat and woven rovings. Potter's bulletin [4] No. PB24-1 lists 13 specific advantages attributed to the use of glass bead as a filler and reinforcement to plastics. The major advantages stressed here again were improved moldability which they attributed to minimum viscous drag from the spherical surfaces and also that the glass spheres act like tiny ball bearings and increase the polymer flow rate.