Re: 3D printing, powder spreading

I think everything you need to know is in the following patent:
Patent number: 06610429
Materials, accelerating agents, binding agents, the use of adhesives,
humectants, the whole nine yards.
Regards
Fernando

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Fernando" <fer_mayrl@...> wrote:
>
> What kind of binder are they using on the plaster that hardens so
quickly?
> Regards
> Fernando
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Fernando" <fer_mayrl@> wrote:
> >
> > Well the video says that that printer uses standard HP inkjet
> > cartridges, that are gravity fed with binder and can produce 24 bit
> > color. They say that the material used is plaster. and that the shoe
> > sole shown in the video takes between 2 to 2 and a half hours. The RAM
> > chip was printed in 7 minutes.
> > Amazing, it seems simple enough mechanicaly, I have no idea on the
> > side of software, and substrate material and binder.
> >
> > Hope that helps you clear what was said on the video.
> > Regards
> > Fernando
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Graham Stabler" <grezmos@>
> > wrote:
> > >
> > > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "turbulatordude"
> > > <dave_mucha@> wrote:
> > > >
> > > > On the unit I got from teh dumpster, the part was 'printed' with
> some
> > > > hot polimer, then trimmed with a rotating cuter. much like an old
> > > > style lawnmower.
> > > >
> > > > So, each pass of the printing was followed by a pass of the
cutter.
> > > >
> > > > the part was then lowered by some increment and the next layer was
> > > > laid down.
> > > >
> > > > I never saw it work, but the roller seems to be sharp and rotate.
> > > >
> > > > Dave
> > > >
> > >
> > >
> > > Ah that's a different sort, this prints binder on to corn starch or
> > > plaster. I wish I had dumpsters like that near me :)
> > >
> > > Graham
> > >
> >
>