3D Sensor for Reverse Eng

From: Hong Ding (hding@alnitak.usc.edu)
Date: Thu May 16 1996 - 12:50:45 EEST


Dear Friends,

We are very happy to receive so much advice from
friends (Wohlers, Mitchell, Bauer, Daniel,
Addleman, Mariner, just name a few) since we posted
our message "3D sensor for RE". We would like to
take this opportunity to thank all of you. All the
advice from you are really helpful to our search of
3D sensor products.

Some of you have mentioned the experience with
Digibotics scanners, we would deeply appreciate it
if you could share with us following first-hand
data in the use of Digibotics (particularly their
model II) from a client point of view:

1) It comes with a editor for you to manipulate
with the scanned data. Does the editor only serve
the purpose for fixing "bad points" in point
clouds ?

2) We hear from someone that the claimed accuracy
is +/- 0.001 in, not 0.01 in, is that true ? what
about the real accuracy the system normally
achieves ?

3) It can output STL file. Some of you have
fabricated the model on a RP machine. How about the
quality of the STL file ?

4) It can also output IGES file. Has anybody tried
to manipulate its IGES data using a CAD system,
like Pro/E ? How much space there for you to
modify this IGES data ? How much have Digibotics
guys done with "point clouds -> STL and/or IGES" ?
(BTW, what version of IGES does it support ?), The
idea case for us is that we want be able to
manipulate its IGES data (to some extent) using a
CAD system to produce a revised model which is
different to that extent from the original scanned
object. Is that achievable by using the Digibotics
II or any others ?

5) We don't know whether it is appropriate for us
to raise the price question here. What is the
normal price range for a Digibotics II ?

Thanks again.

Hong



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