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What's the point of defeaturing?

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    What's the point of defeaturing?

    Maybe I misunderstood something, but I thought that defeaturing was an optimization?

    But it keeps pretty much 90% of the polygons:

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    Click image for larger version

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    Now, since this is done AFTER tesselation, I get why it has to be like this, but if it was done BEFORE tesselation, it wouldn't have to.

    99% if not 100% of all holes made in CAD software are made with trimming, and that retains the surface data where the hole is placed. You can always recover the full surface after you've made a hole, and most CAD software has an "untrim" feature.

    If you want to see an example of a good defeaturing implementation, look at Ansys SpaceClaim.
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