How to get an unfishnet split with an extruded form ?

[cali.season26]

HI,

I am using an extruded form to split the cube.

That works fine, but I get a fishnet on the cut.

How can I get a neat cut, or eventually, how can I erase the edges of the fishnet, after splitting.

If I don't weld some vertices of the extruded form, the cut is neat.

If I merge edges or weld vertices, the cut has a lot of edges, and I don't want such result.

An inspection with curvature map analysis don't show any discontinuity of the cutting surface.

So what is wrong for me ?

Thanks you for your help.

[TrippyLighting]

There isn't anything inherently wrong with these "Lines". they smoky indicate a different NURBS patch.

However, the T-Spline you use for splitting has several triangles in it and that is something I'd avoid. Chances are that will also reduce, or even eliminate the lines you have in the split surface.

[cali.season26]

Tx a lot for your reply.

I know that T-splines don't like triangles, but this is just an example.

If no discontinuities in a surface (so as C- ∞ surfaces), that would be nice that Fusion could render a neat surface, if the user would prefer to see a neat surface in the modelling ...

[TrippyLighting]

Surface continuity does not mean that the surface is built from a single NURBS patch.

Also if you really want to judge the surface quality you should also be using the curvature comb and curvature map tools.

[cali.season26]

I agree with you.

When I talk about continuity, I want to mean the continuity of the successives derivatives (a smooth surface).