Thank you for your answer. My question is that the model wireframe on the picture is very complicated, even if it is used_ Subdiv_ The beta plug-in's wireframe display can't be reduced, but the pictures show that the wireframe display after subdivision is rare. I don't know how to do it

Hi ZBW, I'm sorry but I don't understand your question.

In the sub-d modeling program the model is made out of smaller elements, each one a quad polygon.

It is not efficient to have a CAD model with a large number of separate little elements like that, to work as a CAD model larger surface patches are formed by combining the small quads together.

A result of that combining is there will be a smaller number of edges in the converted result, instead of edges around each small quad polygon element, there will be edges only around the larger combined patches.

This is all a normal and intended way for the conversion to work.

- Michael

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Hi ZBW, it looks like you're showing the difference between Max Smirnov's sub-d conversion plugin and the one in MoI v4 under SubD > Create > From file ?

Yes, that is true that they have different behavior.

- Michael