Practical Wax Modeling : Advanced Techniques for Wax Modelers
Mr. Hiroshi Tsuyuki is a graduate of the of the Rikkoyo  University and the President of the Japan Jewelry Craft  School. Mr.Tsuyki is a member of the Japan Jewellery Designers  Association ans the Japanese Society For Science of Design.Ms. Yoko Ohba is the Vice President of the Japan Jewelry Craft School  and the Executive Director of Associate Co., Ltd. Ms. Ohba is a member  of the Japan Jewellery Designers Association and of the Japanese  Society For Science of Design.