Here's my scratchbuild of a DH Hornet Moth in the silly scale of 1/43rd, 7mm -1ft, British O gauge, etc. Why? because I like to put stuff in a scenic set-piece and have made so many master patterns for 1/43rd scale collectors' model kits that I want to display 'plane with car where possible. I also have 1/43rd scale small buildings which can double as small airfield offices, caffs, etc.
Having sought, found and had my son print to size suitable drawings, I started by pricking through onto 60 thou styrene sheet to get the side profile and base shape of the "box" which is most DH fuselages. With the Hornet Moth the cabin has a very weird shape, mainly thanks to the tops of the doors. Angles in plan and in section tend to fight each other until you have it in your head. Good luck with that!
I could just jump in the car and toodle off to Felthorpe, my old flying club and inspect the one they have in the back of the hangar, but in this heat it's too damned hot and too much petrol, so I'll go along with a few pictures I took last time I was there.
The longerons are there to support the skins of 10 thou. styrene that I will make the surfaces from. The frame showing through the surface is done with a ballpoint pen drawn along the back of the styrene with varying pressure to represent the varying tightness of the fabric covering over the varying framework scantlings.
The cowl side panels and the doors are made in 16thou. K&S Metal Centre because it is the nicest aluminium I know and I have a veritable library of the stuff, from crispy hard litho plate to soft as muck malleable on a roll. K&S allows you to hand beat some tight shapes and compound curves, so I carved a Ureol hammer form of the lower nose tray (not all DHs have them) over which I hammered the shape in K&S ally. Filed to trim and glued beneath the nose support structure which was made of various bits of styrene to simply back up and support essential items, like the Ureol nose piece, which will be foiled in Sellotape aluminium tape as it's just a little too much to hammer sheet over.
Here, despite PB acting up are a couple of shots so far.