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Hi ZBW, what is the goal that you are trying to achieve by refining the wireframe in MoI after doing the import?

Currently MoI does not have its own sub-d modeling tools, so if you want to apply sub-d modeling techniques you would do that in your Sub-d modeling program before transferring it into MoI.

Once you have transferred it into MoI you can use CAD modeling techniques on your object like booleans for example, but not sub-d modeling techniques on it inside of MoI. Not yet.

Also another thing to look out for is when you transfer your sub-d model over you want to transfer the base level 0 control mesh, not one that has already had sub-d smoothing applied to it, that will cause the NURBS model in MoI to be excessively dense for no benefit. I mention this because in your screenshot it looks like what you are calling the "base mesh" looks like it has had some refinement applied to it and is not the actual base control mesh.

- Michael

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