where is the true geometry?

From: Ngee Lee (nlee@insightpd.com)
Date: Fri Mar 22 2002 - 19:29:09 EET

Hi All,

I have a general question concerning parts built by rapid protoyping
machines (SLA, FDM,...). Where is the true geometry of a part with respect
to the steps on the part surface? Is it at the tips of the steps or at the
inside corners of the steps? In another word, when finishing an SLA part, do
you sand away the steps to get to the right geometry or keep the steps?

Is there a way or setting which allows you to either overbuild or underbuild
a part?


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