Wow.. Just plain wow.. I do have a question - Wood. Is there any reason other than the amount of workability? By which I mean, did you pick it just cause you didn't have enough metal working equipment?
Still - Absolutely amazing - I do however think you should of stained it a really nice dark stain colour instead of black - Guess it isnt my case though.
Last thing - How much is the thing gunna weigh??!