Re: Software help for new RP system

From: Alain Bernard (
Date: Tue Aug 26 1997 - 10:21:43 EEST

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We are looking for leads and suggestions of software,
or software developers (CAD/CAM) that can help us optimize
a part of our software that is currently being used for the TSF

TSF builds large models by spraying molten wax into thin,
successive layers of sand. The key difference from other
systems (and why it is cost feasible on a large scale) is
that only a surface outline and internal support ribbing
is printed. When surfaces get close to horizontal, multiple
print stripes next to each other are required to create the
minimum wall thickness of the model.

The challenge is to take a 3D surface model, represented as
a dxf file (or IGES), and create 2D poly lines (or splines)
for all the slices, representing the tool path, not just the
surface. This means that side-by-side lines would be
automatically created when needed, and the proper offset would
be automatic. Ideally, the support grid inside would be auto
created as well. The needed output (today) is dxf, although it
would also be feasible if the output became 2 1/2 axis g-code.

SurfCAM and MasterCAM do not appear to have anything useful,
it seems. Does anyone know of others?

Mats J.

Mats Jansson, Formus             
185 Lewis Rd. - Suite 31              tel: +1-408-226-1000
San Jose, CA 95111, US                fax: +1-650-363-9194
Web:                direct: +1-650-368-0850

===========We make BIG models directly from CAD===========

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Dear RP collegue !

I saw different informations on your technology on the Web. Perhaps, for your software problem, you should contact CIRTES in France. They have developped Stratoconception for large models and use 2D, 2D 1/2 and 3D layers for micromilling or laser cutting. e-mail :

Another point. I am the vice-president of AFPR (French Rapid Prototyping Association). I think you did not have informations on our 6th European Conference on RP in Paris (2&3 december). During this conference, there is a special session for RP new technologies. So, if you are interested in presenting a paper, please let me know. It is not too late, but I need to know as soon as possible. The two past years, we had about 150 attendees, and this year we are expected about 200. There is also a space for contacts with industrials (for this, please contact REMARK. Fax : + 33 1 39 74 89 27).

Looking forward, Best Regards,


---------------------------------------------------------------------- Prof. Alain BERNARD Tel : + 33 (0)3 83 91 27 29 Professeur d'Universite + 33 (0)3 83 91 20 09 CRAN UHP Nancy I - ESIAL Fax : + 33 (0)3 83 91 23 90 BP n 239 54506 - VANDOEUVRE cedex - FRANCE email : ----------------------------------------------------------------------

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