In this example I use Nurbs curves to create shoe laces and it becomes quite hard to operate curves in the regions of loops and knots because of the curves' tilt/scale guides (not sure how to call them). I would really like to hide these guides when I edit curves. Is it possible?
1 Answer
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Those black lines are the normals for the curve.
Blender 2.79:
You can change the way they are displayed in the "Curve Display" tab.
Blender 2.80
To make them smaller change the normal size.
To make them disappear uncheck the normals box.