Re: Eosint P

From: Elaine Hunt (Clemson University), Albin Hastbacka (Sanders Design International, Inc.)
Date: Sunday, October 15, 1995

From: Elaine Hunt (Clemson  University), Albin Hastbacka (Sanders  Design International, Inc.)
To: RP-ML
Date: Sunday, October 15, 1995
> I think that all RP users would love to hear about the technologies that we
> can not possess.  

From: "Ulrich G. Kliegis" <Ulrich.Kliegis@kiel.netsurf.de>
Subject:       Re: Eosint P
Short comment: 
     We had a skull model made on an EOSINT machine. We provided 
interpolated CLI contours (0.2 mm spacing) and got what we wanted. 
Material: polystyrol.
     The surgeons seem to like the material for special applications - 
matching implants for instance. 
     For surgery planning (simulation of dissecting parts), it seems to be 
too hard - they prefer polyurethane foam. 
     At least, the technology seems to be on a mature level - you can send 
data to a service bureau and get an object back - which cannot be 
said of everybody :). 
 ++++++++
Anybody of you in Erlangen later this week at the Rapid Prototyping 
in Medicine conference? 
Ulli
------------------------------------------
Ulrich G. Kliegis
Phone (x49) 431 33 11 44

Date: Mon, 16 Oct 1995 10:31:08 EDT
Subject: European SLA Machines
     With regards to Elaine's call for comments on European SLA
and SLA technology, I am offering the following:
     I recently visited Europe and had a chance to observe the
state of the art in both SLS and SLA technology.
     1. With regards to SLA technology, Laser 3D appears to have 
the SLA machine with the best surface finish (when they use 
25 micron layers) and the fastest build time.  Their machine 
actually creates clouds of vapors above the vat when it
produces some parts, because it is running so hot.  Laser 3D 
does not sell the machines, but only provides rapid
prototyping services.
     2. The parts that were made with the EOS machine had a layer 
thickness of 4 mils (100 microns) and appeared to have a
better surface finish than similar parts I have inspected
from 3D's SLA 500.  I was told by one of the automotive
companies that the EOS SLA machine can produce his cylinder 
head in approximately 30 houra versus 48 hours on an SLA
500.
Regards
Al Hastbacka
                     P.S.
Elaine:  It would be interesting to have several of your STL 
files made into patterns by Laser 3D, EOS, and 3D to
determine who provides the "best bang for the buck".


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