I'm glad to hear Black Walnut well spoken of as a bow wood. I've made 6 attempts with the stuff and only one is a shooter, ...and it has taken mountains of set. I'd really like to get Black Walnut to work out for me, but it continues to be my kryptonite among bow woods. We have gobs of it growing around here. The stuff is so pretty, and works well with my tools, but it just does not hold up for me. ...and I am sure it is me, because I have seen very nice BW bows that others have built with few or no issues.
OneBow