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Strange green circle on spline (no tangent handle) creates edge when lofting

Strange green circle on spline (no tangent handle) creates edge when lofting

Anonymous
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Strange green circle on spline (no tangent handle) creates edge when lofting

Anonymous
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Hello,

 

I am designing a tiara and therefore made a head reference out of splines. I made two splines as profiles and several other splines as rails. I used the Loft Tool in Patch workspace to get an organic shape of the head. The splines I used for the Profiles in Loft tool are narrower towards the back of the head. This way the tiara's headband applies preasure onto the head to hold itself in place.

 

This narrow design is my third iteration. The 2nd iteration striclty followed an imported anatomical correct head model. In this 2nd iteration I didn't have that problem which I have now.

There is a green circle one of the Rail splines on the X/Z layer. When lofting everything in Patch workspace, an edge (marked with arrows in the picture) is created onto the face on the X/Y layer and this annoys me:

dent_.jpgdent_.jpg

 

The headband of the tiara should be stepped from top to bottom. 3.5mm > 2.8mm > 3.5mm. I use 4 Construction planes at the specific heights and sketches on each Construction plane. I create the sketches through Sketch > Project / Include > Intersect and use my lofted Patch (or is it a face?) as the Geometry in the Intersect tool. But the edge which is created through the green circle (I suppose) breaks the curvature. When I now offset the intersect projection this break or dent gets visible even more which I don't want:

dent_2.jpgdent_2.jpg

 

Side note:

The patch which is created through lofting is a single body but split into to faces. I can only thicken the back part of the body but not the front part:

dent_3.jpgdent_3.jpg

 

How do I get rid of this green circle?

Is this green circle the root of my problem?

What is this green circle?

Should I better redo the X/Z layer sketch spline?

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Anonymous
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For now I just deleted the spline with the green circle on the X/Z layer and created a new one. So this is a workaround. But I am still curious why this green circle appeared before and how to get rid of it without re-doing the plane from scratch.

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