As i mentioned in a earlier thread, this type of bows were commom in ancient china and holm and other place, so i prefer to call it chinese han style BBI bow. it was built from a not so perfect ipe stave: sapwood in an end and not thick evenly and worst not wide enough. that's why you see i cut it from a diagonal line to gain a 4cm wide and get rid of the most sapwood all by hand plane. i have to say the wood is so hard! after done, i gave it to a doctor who graduated from the research center where i am in as a present. he is going to do further experiments in US this month. maybe some of you guys would teach him archery in future. i am the fat guy in white and black and i am also going to begin my work for a doctor degree this sep.