that's awesome.
big leaf maple is about the softest maple there is. It is my new favorite wood for a hand drill- so if it's soft enough for that, I'm surprised you got a bow out of it!
For those that don't know , it grows mostly in WA and OR (CA?)- it grows remarkably straight and big diameter, with widely spaced branches. Grows fast too- rings can be 1/4 inch plus.