[Yartonbler]

Even if we can get an Asteroid and put it somewhere , there is still a lot of work to do before you can use the raw material . crushing, gading, smelting, refining, extruding all require a lot of energy but more importantly a lot of plant and inferstructure.
The cost in $, man hours and energy implies that we would need to do that on Earth and on Earth for many years (how long is many.....?).

Whilst I dont doubt one day we could in all probability it seems like going to the next suburb to get some sugar you have in the Kitchen because you have a flash motorbike.

Which leads me to a thought I had in another thread , about what we could use re metal and manufacturing on the Moon say.
Would it be a crazy idea if we were to ship ingots of what ever (Thinking ally here) and extrude different sections somehow with a variable press , sheet , pipe etc .... walls doors something semi universal but adaptable without holding stock ?

Just a thought

Brett