Abstract: In a spindle of a machine tool, a cylindrical member of the spindle adapted to accommodate the shank of a tool is prepared by winding carbon or glass fiber and the wound fiber is impregnated with a heat curable resin. After curing the resin a protective coating layer is applied to the other surface of the cylindrical member.

Abstract: A multiplex spoke having metal parts at both ends of its fiber reinforced rod and an external thread portion at the end of one part is fitted to a rim for coupling the metal part to a nipple.

Abstract: An undercoat composition for ceramic flame spraying and composite molded articles produced using the undercoat composition are disclosed. The undercoat composition comprises an inorganic filler component having complex irregularities in the surface thereof and an organic binder component. The composite molded articles comprises a substrate, a ceramic flame sprayed coating, and an intermediate layer between the substrate and the ceramic flame sprayed coating, said intermediate layer being made of the above undercoat composition. The present undercoat composition permits good ceramic flame spraying, and there can be obtained composite molded articles having good impact resistance and environmental resistance.