Re: [DS2] Vacuum

>How much does it cost to vaccum proof a turret ring? or in other words
I
>suspect that vehicles will cost more.

There's a salient point.  As it happens, I sell industrial plastics, one
of
which is suitable for vacuum applications.  A 1" x 10" x 10" (100 cubic
inches) plaque was priced at  US$3492.00 until the April price increase.
Hopefully vacuum-proofing will be less expensive in 200 years.