A filament wound mandrel is generally manufactured in the same process as ordinary mandrels, except for the final processes. In the final processes resin-coated of resin-impregnated, high strength, continuous filaments made from fibers of generally glass, graphite, Kevlar or boron materials are wound over the mandrel using longitudinal, circumferential or helical patterns. After winding the mandrel are placed in an oven for curing.