Your building is very neat and exact - something for us all to aspire to

How did you drill the holes for the hinge points? Did you solder a drill bit to the brass tube? Also what type of drill bit did you use to give such a neat hole in the balsa?

I have not used Robart type hinges before but I have bought them for installing in a 1/4 Tiger Moth (currently on the table). I have bought the Robart drill jig but your method looks like it could be more precise and is done with the wing on the board - easier to drill parallel to building surface!

For the aluminium finish would flite metal be appropriate, see link.

[link=http://www.scaleaero.com/flitemetal.htm]Flite Metal Web Page[/link]