Re: Some easy questions

From: Phil Orenstein (aporenstein@worldnet.att.net)
Date: Wed Mar 18 1998 - 08:57:29 EET


Dear Pedro,

The Direct AIM process by 3D systems, the producers of the SLA, can
produce small direct tooling from their RP system. A Tupperware product
development engineer reported at the SME conference that he succesfully
produced small molds from this RP process with a thin shell and a
backfill of low melt alloy with waterlines close to the surface. He
claims he could run up to 1000 shots.

 Regards,
 Phil Orenstein
P.O.P. Display Inc.

Pedro Garayo wrote:
>
> Thanks everybody for your answers.
> I knew one could not get 0.1 mm. easily. As usual, I will be following most of
> the ideas people from the list have given away (FREE!!, and this I really
> appreciate).
> In fact, the final part for my prototype would be made of metal. Again an easy
> question, Which is the best RP method to make a mold to make rapid metal parts?
> I know there are several indirect methods I can use, building a master pattern
> with some RP machine... but, how about making the mold directly with an RP
> method? In this case, I believe I should forget about good accuracies...
>
> Thank you folks.
>
> Floyd E Roberts escribiˇ:
>
> > Sanders prototyping would be good folks to talk to about those kinds of
> > accuracies. I know they have done work on a system which should meet your
> > needs in a NASA SBIR grant.... you might talk with them and see how much
> > information they are willing to give you about their work..... Al Hastbacka
> > (who last I heard kept tabs on this list) would be a great fellow to talk
> > with.....
> > Floyd
> >
> > karapatis nakis wrote:
> >
> > > Dear Pedro,
> > >
> > > As far as I know, you won't go very far below 0.1 mm accuracy with rp
> > > systems (please let me know if i'm totally wrong !!!) such as SLS.
> > > Again, if what you need is a PA prototype for function test, SLS is the
> > > right method. Even better would be to make a prototype mold (by SLS) and
> > > inject the prototype part ("production prototype"). If it's just for
> > > assembly testing, i'd say SLA is a good choice...
> > >
> > > Nakis
> > >
> > > > -----Message d'origine-----
> > > > De: Pedro Garayo [SMTP:pedgar@cidaut.eis.uva.es]
> > > > Date: dimanche, 16. mars 1997 20:37
> > > > └: rp-ml@bart.lpt.fi
> > > > Objet: Some easy questions
> > > >
> > > > Dear rpmlers,
> > > >
> > > > Are there any systems able to obtain an accuracy of 0,07 mm. or
> > > > better?
> > > > Is it SLS(using PA11) the most suitable for prototypes to be used in
> > > > an
> > > > assembly?
> > > > (The part fits in 250x100x40 mm. and it is 1.5 mm. thick)
> > > >
> > > > Thank you very much.
> > > >
> > > > Pedro Garayo
> > > > mailto:pedgar@cidaut.eis.uva.es
> > > >
> > > >
> > > > For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
> > >
> > > For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
>
> ---------------------------------------------------------------
>
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> Encoding: 7bit
> Description: Tarjeta de Pedro Garayo

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