Zebra analysis artifact & constraint issue

[Intuos5]

Today I've done some practice modelling on a Y-transition after I saw this thread. The model turned out just fine, though I do have a few questions on things I noticed during an earlier stage of the model. When I turned on lock stripes in Zebra analysis it created some artifacts, is this just a projection issue of the texture?

Second, my construction lines for tangency constraints in the sketch did not maintain their connection with intersected geometry points. Is this generally a bad workflow? See the video and I've attached the file just in case.

[TrippyLighting · Accepted solution]

That is just an artifact of the lock stripes function. 

You've left out the most interesting part, and the third loft and then closing the thing.

I am wondering how you intend to do that.

Also, I don't think I'd ever work with solids for such a "thing". NOt that this is wrong, a bit to close the inside you'll end up having to work with surfaces anyway.

[TrippyLighting]

Also, the spline constraints work. However, the construction lines don't seem to update with changes in the geometry. How were those created ?

[Intuos5]

@TrippyLightingThe construction lines were created by intersecting the 'horizon bodies' with a plane through their construction circles' midpoints. I then intersected the bodies with this plane, but instead of choosing the sides, I intersected the top/bottom and connected the endpoints with sketch lines. These do not hold position with a change in parameters. However, now that I've just intersected the sides, they do.

Since the surface part in the center wouldn't join properly, I redid it with surface modeling instead, it's much faster in computation, you're right as usual. Note that I used the constraints I used for my own testing purposes in this case. 😉

It only self intersects when I change the angle of the ends due to this particular spline handle, but I consider it done anyways.