[Info-vax] Nice printers for OpenVMS?

[JohnF]

Paul Sture <paul at sture.ch> wrote:
> On Sun, 05 Aug 2012 13:22:07 -0700, John Wallace wrote:
> 
>> From my recollection of the facts, the headline is (as is increasingly
>> frequent under Lewis Page's editorship at El Reg) somewhat misleading,
>> and I'm not sure the article is much better.
> 
> Yes.  Some of the headlines and articles behind them are dubious nowadays.

You mean like
  http://www.theregister.co.uk/North_koreans_use_3D_printer_to_build_
  atom_bomb_and_icbm.html
or
  http://www.theregister.co.uk/3D_printer_builds_another_3D_printer_
  but_makes_mistake_and_builds_improved_3D_printer.html

But
  http://www.makerbot.com/
which actually builds these things right here in my hometown
has some interesting, though less dramatic, stories.

And a little puzzle that's had me confused: you can't "print"
any 3d object whatsoever because these printers work by deposition.
So you're constrained to shapes that can be constructed by deposition.
What are the rigorous geometrical/topological/whatever contraints
imposed on the family of shapes that can be constructed by this process?
-- 
John Forkosh  ( mailto:  j at f.com  where j=john and f=forkosh )