SLA or stereolithography

From: Mail List <mail.list_at_analog-and-digital-solutions.com>
Date: Thu Sep 25 18:18:30 2003

I believe that process is called stereolithography
and also possibly fused-deposition-modeling

as may be seen at ...

http://www.edwardsind.com/models.htm

http://www.quickparts.com/

http://www.fdm-modeling.com/

http://www.designinsite.dk/htmsider/p0051.htm

http://www.rpi.on.ca/

http://rapid.lpt.fi/archives/rp-ml-current/0987.html





At 04:49 PM 9/25/03 -0400, you wrote:
>At 02:27 PM 9/25/03 -0500, you wrote:
> >On Thu, 25 Sep 2003, Bryan Pope wrote:
> >> And thusly Tothwolf spake:
> >>
> >> > Clear cases are usually made just prior to any texture being added to
> >> > the production molds. Usually they are used for engineering purposes
> >> > (making sure it all fits), but sometimes they will also use those
> >> > cases for demo/promotional purposes too.
> >>
> >> Just a thought....
> >>
> >> Is there any *other* way to tell that this is an original? What if
> >> somebody went and made a new clear plastic case and replaced a normal
> >> case? How much does a normal cased HP-85 go for?
> >>
> >> The 3D printers out there are getting cheaper... (relatively!)
> >
> >I seriously doubt someone (at this point) would make up a new case with a
> >laser system.
>
>
> I've seen cases made with 3-D lasers (my old employer was a pioneer with
>the process). They're very rough. The process leaves DISTINCT ripples in
>the surfaces and it's obvious that they're not normal cases. The chemicals
>used in the process are VERY expensive. In addition you would need a 3-D
>CAD drawing to operate the lasers. The process is MUCH to difficult and
>expensive for use in making fake cases, especailly for something like an
>HP-85 that's usually cheap (<$100) to begin with.
>
> Joe
>
>
>Making molds to create just a few cases the old fashioned
> >way would also be extremely costly, so I don't think we have to worry
> >about it just yet. Maybe in another 5-10 years though...
> >
> >-Toth
> >
Received on Thu Sep 25 2003 - 18:18:30 BST

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