A method of forming a fracking tool, such as a frac ball or a frac plug mandrel, may include: applying a resin to wet a filament; winding the wetted filament to form a cylinder; placing the cylinder in a cylindrical mold; increasing a pressure in the cylindrical mold to at least 3,000 psi; curing the resin at the pressure and a temperature of at least 250° F.; and extracting the cylinder from the mold. In some instances, the method may further include adding the resin and/or another resin into the cylindrical mold.

A method of forming a fracking tool, such as a frac ball or a frac plug mandrel, may include: applying a resin to wet a filament; winding the wetted filament to form a cylinder; placing the cylinder in a cylindrical mold; increasing a pressure in the cylindrical mold to at least 3,000 psi; curing the resin at the pressure and a temperature of at least 250 F.; and extracting the cylinder from the mold. In some instances, the method may further include adding the resin and/or another resin into the cylindrical mold.

An automated machine for forming winding structures without the use of a mandrel using a driven headstock and driven tailstock. The winding machine allows for selective orientation and selective layering of the filament as it is wound onto the pin rings. The winding structure can receive forms into a hollow center and the composite placed in a female mold. Alternatively the winding structure may be formed into a laminate which can be orientated and aligned on a form to achieve desired mechanical properties.