JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. To Remove an Existing Knot Point from a B-spline Curve Select the Edit Knots tool ( Modeling > Curves > Modify Curves ). Select the Remove Knots icon. Select the B-spline curve. Graphics display the existing knot points. Select the knot to be removed. Enter a data point to accept the change. (Optional) Select more knots to remove and accept by entering data point. Removing existing Knot Point. Method = Single, Control Points = On Parent topic: Edit Knots