Some more answers:
The bow is 15oz in weight.
The bamboo laminate was taken from a 5’’ diameter pole. It was thinned on the inner side; the outside just had the nodes and rind scraped down. This, with a same dimension lam of hickory sandwiches a pre-fabricated handle laminate and two wedges to thicken the 'Kasan' section. Bamboo laminate on the back; Hickory on the belly. These components were next glued together on a form to give the curvy shape.
THe following pics are from adiffernt bow, but the process is the same.
Sorry but my camera broke after this stage.
The ears were spliced in next , then the laminates of horn attached , followed a couple of weeks’ later by the first course of sinew. Another two weeks and the second course is added and the bow pulled into increasing reflex.
Cure for a minimum of six months, add some additional hickory and paduak lams/overlays to the handle (back and belly). Apply sinew wrappings to the stress areas, peg in some string bridges and tiller/ balance, narrow tips, etc.
Finally cover with leather, and again wrap the stress areas, in this case with waxed cotton cord. Apply finish.