Bone fiddle is a really difficult item to obtain (compared to other items of the same slot), really useful at almost any stage of the game but obtainable only through a lvl 250+ quest (secret library, asura mirror section), that said as other quest item obtaining just 1 isn't enough to supply the need of many (specially of those who can't obtain it themselves), that said i heard that is possible obtaining some of the parts needed to craft it, but no one of my friends confirmed me if is possible to craft more than one, so:
It is possible?
If is possible, it does have a cooldown? (like 20hr to be able to obtain the items again or so)
it require some specially condition? (like not ending the quest in order to obtain the items)