Looks great to me so far. I can't tell if you used the same design as the pvc one you built as a proof of concept idea ? Do you have pictures of the prop as you built it ? and the measurments of the pieces you cut to build it ?
it's the same design as the pvc. i used the plastic as sort of a guide before cutting the aluminum as it's way cheaper and you want to work all the kinks out with the pvc, not the metal. i didn't take any step by step pics but you can pretty much figure out the measurements from the pics and vids i took. all in all,the pvc seemed to work prety good, but don't think it would hold much weight.