What kind of tree is this?

[fishheadbob]

Someone suggested that Bois d' arc trees make good bows. Bois is wood in french, arc is bow; so the French knew what tree to use for bow making. Strong, everlasting, rot proof fence posts too.
This thread is both funny and a little scary. I think the O.P. might have a project way above his skill set, and it might not end well. Or maybe when he's finishes he'll be a master woodsman with some high end chainsaws and no serious injuries.