Wings Are Fairly Easy, Sir, Though Laborious

My technique is pretty much limited to 1/72 scale; for larger things, a smooth core, skinned in thin plastic, is preferable.

To get the outline shape, I fasten (usually with double-face tape) a guide to a rectangle of sheet, cut a bit over-sized,and then trim down, with knife and file, to match. The guide will usually be a photocopy of a reliable drawing, but in this case, I used the kit parts as a guide.

The airfoil section is filed in with emery sticks (I use very heavy grit 'salon boards' sold in the nails section). A line is marked at the high point of the airfoil,usually about a third of the way back from the leading edge. Hold the stick at an appropriate angle and file away; it will take a good deal of time. The 'salon boards' have a soft core, which acts to lend a bit of curve to what you are doing more or less automatically.

Ribs are put in by a combination of light scraping with the curved edge of a No. 10 blade, and sand-paper, in grits ranging from 220 up to 600. Rather than coil the sand-paper, I fold small swatches over on themselves several time: the fold will have a rounded surface, and there will be a ridge above it that is easy to grip. The point is not to gouge deep valleys, but to leave raised ridges, so you do not want to over-do this: use a light hand.