SV: Part Complexity on the SLA

From: Avellan Lars (
Date: Thu Jan 25 2001 - 15:18:51 EET

I have had this problem in two different technology selector programs.

One was in DERP, which is an EU-supportet work, which has resulted in a
selector for materials and technolgies including vacuum casting and layer
manufacturing processess.

The other case is a Swedish projekt with a selector for RP process chains.

For both selectors we choosed not to involve a mathematical scale, but
defined different type of complexity by a few examples showed with pictures,
and the operator could choose the picture that best correspond to his own
part complexity.

Lars Avellán

IVF Industrial Research and Developement AB.
Brinellvägen 68

Phone +46 8 202570
Mobile +46 70 7806212

-----Ursprungligt meddelande-----
Från: J Alexander Mitchell []
Skickat: den 15 januari 2001 20:49
Ämne: Part Complexity on the SLA

Greetings RPML,

I am wondering if anyone has any ideas on how to numerically categorize part

complexity for building parts on the SLA. I am trying to place parts into
three groups of complexity: low, medium, and high. Visually, I have the
ability to categorize the parts with respect to how they will be built on
SLA. However, mathematically I am running into trouble. I have analyzed
ratios between 1. surface area and extent volume, 2. surface area and part
volume, and 3. part volume and support volume. Unfortunately, no trends are

Any help that you can provide will be greatly appreciated. Again I am
considering the part complexity under the assumption that it will be built
the SLA.

Thank you in advance,

J Mitchell
Graduate Student

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