I thought I would give a little report on my opinion of Massaranduba as a bow wood. I recently bought two large boards and I think I got about 7 bows out of it. Two hickory backed r/d bows, one self recurve, one self 35# slightly reflexed flatbow and about 3 backed ELBS. The stuff is bullet proof as far as breaking goes but every bow except the 35# took too much set and all seemed sluggish. I only took the 35# out to 25# where it started to take set and it seems to shoot good at that draw length. I worked some about 2 years ago and had an entirely different opinion, funny what experience does to our perspective.
I had very little luck trying to reflex it with dry heat, I was able to get recurves after steaming for an hour. The dry heat reflex mostly pulled right out. The recurve started taking set so early in the tillering process I never bothered to finish it. One good thing is that it won't chrysal.
I would recommend it highly for tool handles, xylophone keys, overlays and other projects but will not waste any more time on it making bows.