| 摘要 |
PROBLEM TO BE SOLVED: To provide a weight providing system using two-type material realizing a golf club having flexibility in positioning the center of gravity and an excellent feeling. SOLUTION: A golf club head 12 has a partitioned cavity 28 containing a two-type material 70 with an uneven structure. A method adding a two-type material weight providing member to the golf club head 12 is also disclosed as a part of this invention. This method comprises heating, vibrating and cooling processes to form the uneven structure of the weight providing member in the cavity. The weight providing member of the two-type material is preferably constituted of solder 60 containing bismuth and multiple balls of tungsten. |
