Re: [rp-ml] SLA x SLS

From: Brock Hinzmann (
Date: Fri May 13 2005 - 22:51:57 EEST

I doubt that anyone has the resources to invest in all the
process and material technologies simultaneously that
would be necessary to get one approach to out-compete the
other. Just as it has taken a long time for metal
processing and alloying to evolve, I expect to see RM take
an evolutionary path, as each vendor makes incremental
improvements in processes and additions to their materials

I have had laser scientists tell me it makes less sense to
use a laser as a heat source (SLS) than as a source of a
chemical change (photo-initiated SLA), so I would think
that SLA offers greater options, but in the real world,
business models evolve based on what a given customer is
willing to pay for, not what a scientist says should be.

Also waiting in the wings could be discoveries in
nanomaterial science and self-assembling materials that
could tilt in favor of either appproach, responding to
light or heat or maybe even to some new approach using
magnetics or ultrasound or some new hybrid approach. As
Jim wrote, nothing will stay the same.

Brock Hinzmann
Technology Navigator
SRI Consulting Business Intelligence

On Fri, 13 May 2005 11:11:49 -0700
  "Miller, Michael W" <> wrote:
>I agree with Jim, the SL materials will get there. But I
>don't think the SLA process will penetrate production
>very far. It's too expensive and labor intensive. I
>think machines more like 3D's Invision and hybrids are
>the ticket to manufacturing.
>I have to add that this is my personal opinion, not
>necessarily that of my employer.
>Michael W Miller (
>desk) 206-655-3289 pgr) 206-416-0257 fax) 655-0025
>The Boeing Company Seattle M/C 45-17 66-ZB-XS29
>Rapid Product Manufacturing 655-4366 or 655-2262
>Disclaimer: Engineer and out the other!
> -----Original Message-----
> From: James P. Harrison []
> Sent: Wednesday, May 11, 2005 12:08 PM
> To: 'Ricardo Calumby';
> Subject: RE: [rp-ml] SLA x SLS
> Hi Ricardo,
> Yes! Our SL resins are currently in use as end
>products. Also, look at the new materials that have come
>out in the past 4 years, including the one you mentioned.
> What a difference! The industry went from several
>General Purpose brittle resins to a wide range of SL
>materials with unique and different mechanical
>properties. At this years SLA/SLS User's conference,
>more SL resins were introduced than ever before. Just
>wait and see what is developed in the next 4 years. But
>the SLS technology is also advancing in accuracy and
>materials. Nothing stays the same!
> Best Regards,
> Jim
> James P. Harrison
> 3Dimensional Resins
> 2991 N. Powerline Rd
> Pompano Beach, FL. 33069
> Phone: 954-582-0582
> Fax: 954-861-1088
> E-mail:
> -----Original Message-----
> From:
>[] On Behalf Of Ricardo
> Sent: Wednesday, May 11, 2005 12:53 PM
> To:
> Subject: [rp-ml] SLA x SLS
> Dear all,
> Considering the new materials developed for the SLA
>process, like DSM Somos NanoForm 15120, could SLA compete
>with the SLS process, regarding direct manufacturing of
>plastic parts?
> It is well-known that SLA is the best rapid prototyping
>process regarding its accuracy. But, the main limitation
>was always the material mechanical properties and
>dimensional stability.
> So, could someday, SLA be used to manufacture end parts?
> Ricardo Bou Reslan Calumby
> Material and Process Development Engineer
> Embraer - São José dos Campos - Brazil
> Yahoo! Mail
>: agora com 1GB de espaço grátis. Abra sua conta!

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