Patent ID: 8308889

Claim:
A method of forming a self heating tool, the method comprising: laying up a plurality of plies of pre-preg material including carbon fibers on a mandrel; curing the plurality of plies to form a forming surface of the self heating tool adjacent the mandrel; forming at least one insulation layer on the cured plurality of plies; applying at least a first coating of nano tube impregnated resin on a first layer of the at least one insulation layer; selectively placing at least two conductive strips on the first coat of nano tube impregnated resin; applying at least a second coating of nano tube impregnated resin over the at least two conductive strips and first coating of nano tube impregnated resin; curing at least the first and second coatings of nano tube impregnated resin; forming passages to the at least two conductive strips through a portion of the cured nano tube impregnated resin; and coupling conductive wires to the at least two conductive strips through the passages.