Hello,
as far as I know,
this machine is supposed to be
a rough copy of
'otherpower' 17 feet machine.
(I was some time ago working
with Naveed Ahmad.)
The blades are being made of fiberglass.
In principle it is best to try making
them as light as possible. So it is a good
idea not to make them of solid fiberglass,
but to use polyurethane inside the blades.
- Hannu