Re: [CAD_CAM_EDM_DRO] Re: Free "zprint"

A couple of years ago ,or was it more? Silicon chip magazine in Australia run an
article on that machine , and another one similar but one used
paper with glue in the back ,one arm pushed the paper in place ,then
a roller will flatten the paper so it will stick to the paper below, then a laser beam
cut only to the last sheet of paper , by doing this thing many times a prototype of
almost anything could be made in carton and then a silicone mold can be made
and finally the part will be cast on lost wax method. the company were I work
ordered some bell housing prototypes to be done that way. Expensive but perfect and
quick
regards
mariano


William Scalione wrote:

> I saw a rapid prototype machine on tv that uses sheets of paper as a medium.
> It puts 1 sheet in place, then cuts the shape with a laser. sets another new sheet
> on top and repeats the process. They didn't get into the mechanics of the machine
> so I'm not sure how the paper sticks to the previous sheet, or how they keep the
> laser from cutting only the top sheet, but it recreated a real nice human skull from
> some MRI type data. Almost looked like it could be home built.
>
> Bill
>
> stratton@... wrote:
>
> > > > But I could ZPrint that. Of course I'd be making it in corn starch and
> > > >wax 8cP
> > >
> > > Sorry Anne I was half spoofing. Indeed I can imagine a machine that would
> > > do that but not in 3 axis.
> > >
> > > But if you can build it in wax/starch or polymer then you can lost-wax it. :-)
> > >
> > > [Not necessarily. According to Bathsheba Grossman, who really tried hard to
> > > make this work, the wax/starch output of the Z-corp "3d printer" tends to
> > > form an unburnable ash that accumulates in blind pockets, leaving voids in
> > > the castings. Granted, her configurations were complex, but that's why you
> > > use these things in the first place. She finally bought herself a Sanders
> > > machine, which deposits a waxy polymer that burns out much better. Check
> > > her work out at http://www.protoshape.com She's also offering custom
> > > output from her Sanders machine.]
> > >
> >
> > Another licensee of the MIT powder-based technology used by Z Corp is
> > Soligen, which offers alumina shells specifically for casting use.
> >
> > Soligen is at www.soligen.com
> > The MIT research group (my employer) is at http://www.mit.edu/activities/tdp/
> >
> > Chris
> >
> > --
> > Christopher C. Stratton, stratton@...
> > Instrument Maker, Horn Player & Engineer
> > 22 Adrian Street, Somerville, MA 02143
> > http://www.mdc.net/~stratton
> > (617) 629-9830 home (temporary), 253-2606 MIT
> >
> >
> > Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the discussion of shop built systems, for CAD, CAM, EDM, and DRO.
> >
> > Addresses:
> > Post message: CAD_CAM_EDM_DRO@egroups.com
> > Subscribe: CAD_CAM_EDM_DRO-subscribe@egroups.com
> > Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@egroups.com
> > List owner: CAD_CAM_EDM_DRO-owner@egroups.com, wanliker@...
> > Moderator: jmelson@... [Moderator]
> > URL to this page: http://www.egroups.com/group/CAD_CAM_EDM_DRO
> > FAQ: http://www.ktmarketing.com/faq.html
> > bill,
> > List Manager
>
>
> Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the discussion of shop built systems, for CAD, CAM, EDM, and DRO.
>
> Addresses:
> Post message: CAD_CAM_EDM_DRO@egroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@egroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@egroups.com
> List owner: CAD_CAM_EDM_DRO-owner@egroups.com, wanliker@...
> Moderator: jmelson@... [Moderator]
> URL to this page: http://www.egroups.com/group/CAD_CAM_EDM_DRO
> FAQ: http://www.ktmarketing.com/faq.html
> bill,
> List Manager