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NURBS Modeling

Edit Curves > Open/Close Curves

Converts a curve between open and closed/periodic.

Related topics

	Periodic, closed, and open geometry
	Make a curve or surface open or closed

Edit Curves > Open/Close Curves >

Shape

Ignore does not preserve the shape of the original curve.

Preserve adds or deletes control vertices as necessary to preserve the shape of the original curve. This is the default setting.

Blend tries to create continuity on the resulting curve. It uses the Blend Bias for the amount of smoothing.

Blend Bias

Alters the amount of continuity for the resulting curve. Large values might distort the tangency of the original curve.

Insert Knot

Inserts a knot at the join point and lets you set a value for the Insert Parameter. This option is available only if you select Blend.

Insert Parameter

Sets the amount of influence the inserted knot has on the curve shape.

Keep Original

Retains the original curve after opening or closing the curve.