Will you please answer my question...
Sorry I needed to think about it for a little while. I think the thing I do the most is to carefully measure out of the length of my lines. Most the lines I draw run parallel to an axis (That's a big help). Its important that corresponding sides have the exact same length and are positioned at the exact same angle (Down to the centimeter) or you will need to use a diagonal to get a face. For larger sections I will often start with generic shape such as cube, carefully measure out the sections I want to keep and then delete the excess. Much as you would if you were working with a block of modeling clay. Hope this helps, if I get some time later maybe I can put a few photos together outlining the process.
From a structural point of view, cylindrical makes more sense. I rathe like that it's just a liitl bit different.
I agree and that is why I went with this route. Once I get the rest squared away I may make a rectangular version as well and then put it up to vote.
Oh, and are the holes in the brace big enough to fly a Ulysses through? 
Sadly no, and they would look kind of funny if I did make them big enough.
