Frosted cones and other thoughts

From: xenophile2002
>> My big hope is to go with cylindrical shape/center light cone
>> design using the Al-Li alloy with far higher than 15000 psi
>> working stress.
>I'm glad to hear you talking like this. We don't need to wait for
>bucky nanotubes!

You need them to lift the initial cargo to start build in space.
Also you need them to bring stuff from earth and to send stuff to earth.

They are the first ten step of the stairs.
You can do witout, but will difficult and dangerous and not cheap.

Mirco