this is a http://www.wicksaircraft.com/catalog/product_cat.php/subid=8082/index.html to wicks air craft a good web site with information about aluminum. also a very good place to buy aluminum and chro-moly tube. all i can tell you is it gets expencive with welding machining and heat treat cost, good luck!
im pretty sure im gonna get all the metal from rancho metal yard tho. cuz its only ten minuetes away from my house. and i also own 4 diffrent welders to. but thatnk you for the help
yea it would be cool if you post the designs so we can give you some feedback to help you choose the right design. if you have a scanner than just use that to upload them onto your computer