Doesn't weight scale with the cube, and not the square, of the linear dimension. Area should scale with the square of the linear dimension.

Fred Rash

Applying this to the LaStick, which is built with 1/16" skin.

1/16" balsa

12"x12"x1/16" = 144/16 = 9in3 (/ .061 = 147.54cm3) = 14.8g/ft2

3mmDepron

12"x12"x1 = .5oz = 14g/ft2

1mm Depron

12"x12"x1 = .25oz = 7g /ft2

If a version is built to a different scale with 1/16" balsa or 3mm depron, I expect the weight to scale to the square.

If a version is built to a different scale with 1/32" balsa or 1mm depron, I expect the weight to scale to the square/2.

Right?

So a 37% version of Mike's 65g airframe in (mostly) 1mm Depron would be:

65 x .37 x .37 x .5 = 4.45g

Like lincoln said.