[Info-vax] Nice printers for OpenVMS?

[Doug Phillips]

On Aug 6, 6:20 am, Johnny Billquist <b... at softjar.se> wrote:
> On 2012-08-06 12:38, JohnF wrote:
> [...]
>
> > 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?
>
> You can't do something which is connected by material on the top side,
> so to speak. It should be pretty obvious if you think about it.
> Something hanging from above would have to be hanging in the void until
> the printer have come up to the point where it connects. Objects are
> built from the bottom up.
>

Which side is the *bottom* ?

For a shape where hangers can't be eliminated, a second type of easily
dissolvable or meltable material is deposited to stabilize the hanger.


> Or did you actually figure it out, and asked a rhetorical question?
>
>         Johnny