You can
use the blades as they are, or you can cut them down to a size
that will fit your application needs. If you want to build a
small wind charger - you can cut off a portion of the last 8
feet, the straight portion of the blade, and easily build a new
root and mounting plate to insert into the blade spar or shell.
You can
build two or more windmills with one set of blades. You can cut
them in half or to whatever length you require and build two
different types of blades using both sections.
The
straight portion of the blade will be a bit more difficult to
redesign - needing a new root that will slide inside the existing
spar - and a plate or flange to attach it to its hub. The bigger
blade is easy to complete - needing only the tip capped off. Fill
it with liquid foam, shape it, and do the fiberglass work. Or you
can shape a wooden tip with an inset that slides inside the
blade, drill the glass and attach the tip with screws, like the
Carter blades use.
Vertical Axis Turbine: The long
straight portion of the blade will serve well for the vertical
blade design. Just guessing.