Patent ID: 8007370

Claim:
A method of making a golf club head comprising the steps of: providing a frame composed of a first material; providing a feedstock comprising a powdered metal and a binding agent; positioning the frame into a mold; injection molding the feedstock around the frame to form an intermediate part having a first size; debinding the golf club head to remove the binding agent; sintering the golf club head to form a finished golf club head having a second size about 10 percent to about 20 percent smaller than the first size; wherein the step of positioning the frame into a mold further comprises providing a mold designed to provide a plurality of voids in the molded product, and wherein the plurality of voids accounts for about 10 percent to 75 percent of the total possible volume of the mold; and further comprising the step of filling the plurality of voids with a second material after sintering the golf club head.