Re: [rp-ml] Article in,July Popular Mechanics about,Rapid Prototyping

Dear All,
I fully agree with this analysis.
We had this experience for about two years and a half and this enables
you to scan with rather classical accuracy of high accuracy, even with
color information, very different objects, from statues, mechanical
parts, old objects, large reproduction objects, in general all the
objects that could not be moved to a MMT or any complex scanning
environment.
This is the sensor your bring to the part and not the part you bring to
the object.
I would like to encourage all you did not make it yet, to test these
portable scanning technologies.
All my Best Regards,
Alain

Andrew Werby a écrit :
> Yes; I just got back from training
> (in Quebec) on a new generation of
> hand-held laser/optical scanners
> from Creaform (www.creaform3d.com).
> These do a great job of capturing
> data from a range of viewpoints,
> which makes it much easier to scan
> objects with undercuts and other
> complexities.
>
> But in order to make functional
> mechanical parts from the scans,
> you need some reverse-engineering software, which can rebuild the
> inherently imprecise scan data as
> clean surfaces and solids. As part
> of my training this past week, I
> got an introduction to GeoMagic
> (www.geomagic.com/ ), which is one
> of the premier software packages in
> this field. I was impressed with
> its range of functions and ease of
> use. Even if the scan data was
> fragmentary (in areas that couldn't
> be "seen" by the scanner) one could
> bridge over it to recreate a smooth
> regular surface.
>
> Of course, for more artistic or
> conceptual sorts of projects this
> isn't necessary - one can simply
> use the original scan data to build
> an RP part. But for something like
> the bevel gear Yasser mentioned, it
> would definitely be the thing to do.
>
> Andrew Werby
> www.computersculpture.com
>
> By the way, if you're interested in new RP technologies for metal
> fabrication, here's something I found out about recently:
> http://www.microfabrica.com/pages/index.php . These guys are building
> miniature mechanical assemblies in a range of metals directly, using
> EFAB technology, a cross between LOM and integrated circuit etching
> techniques.
>
>
> Yasser Hosni wrote:
>> Friends: Combining 3D scanning
>> with RP is not a new idea. What
>> is relatively new is the
>> advances in both fields that
>> made the integration useful and
>> easy to be used by
>> practitioners. I recall that 12
>> years ago we had a project with
>> Egypt to reverse enginee (RE)r
>> through 3D scanning vital spare
>> parts for some Russian machinery
>> where the original drawings
>> were not available. It took us
>> 6 months to RE a bevel gear with
>> poor accuracy. Similar
>> experience with pump impeller
>> was equally poor. At that time
>> we used a combination of
>> traditional measurements and
>> "Cyberware" scanner. Since
>> then the industry have advanced
>> a long way that enabled free
>> hand 3D scanning with high
>> precision and at a lower cost.
>> The product cycle is shrinking
>> with high rate as a result of
>> advances in these technologies.
>>
>> Take care,
>>
>> YH
>>
>>
>>
>> Yasser Hosni, Ph.D., PE.
>>
>> Fellow IIE, Professor Emeritus
>> University of Central Florida 4000 Central Florida Blvd. Orlando, FL
>> 32816 Tel (407)
>> 823-5817 Fax (407) 823-3413 E-mail: yhosni@mail.ucf.edu
>>
>>
>>
>> _____
>>
>> From: owner-rp-ml@rapid.lpt.fi
>> [mailto:owner-rp-ml@rapid.lpt.fi]
>> On Behalf Of Tam Sent: Tuesday,
>> June 09, 2009 2:07 PM To: Robert
>> Jaquiss Cc: RP-ML Subject: Re:
>> [rp-ml] Article in July Popular
>> Mechanics about Rapid Prototyping
>>
>>
>> Robert, Wow! The technology has
>> come a long way. Anyone else
>> using these things? Thanks, Tom
>> Richards, Metallurgist
>>
>> From: Robert Jaquiss
>> <mailto:rjaquiss@earthlink.net>
>> Sent: Tuesday, June 09, 2009
>> 11:47 AM To: rp-ml@rapid.lpt.fi
>> Subject: [rp-ml] Article in
>> July Popular Mechanics about
>> Rapid Prototyping
>>
>> Hello:
>>
>> I just saw an article from the
>> July issue of Popular Mechanics featuring Rapid Prototyping. It
>> is Jay Leno's column. The link
>> is:
>> http://www.popularmechanics.com/automotive/jay_leno_garage/4320759.html
>> Have a great day.
>>
>> Regards,
>>
>> Robert Jaquiss
>>
>>
>>
>>
>>
>
>