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  1. Control frames provide a convenient method to shape the spline. Each method has its advantages. To display or hide the control vertices and control frame, select or deselect the spline, or use CVSHOW and CVHIDE. However, for splines created with control vertices in AutoCAD LT, you can display the control frame only by selecting the spline.

  2. A spline is a smooth curve that passes through or near a set of points that influence the shape of the curve. By default, a spline is a series of blended curve segments of degree 3 (also called cubic) polynomials. These curves are technically called nonuniform rational B-splines (NURBS), but are referred to as splines for simplicity.

  3. If you have a tight area to create a spine in, 01:04. you might want to use fit points as fit points. 01:07. for a spine work in a similar way as poly lines. 01:11. in that the vertices lie directly on the geometry of the spine. 01:17. Control points would be used in situations where you want.

  4. Draw a Spline. Click Home tab Draw panel Spline. (Optional) Enter m (Method). Then enter either f (Fit Points) or cv (Control Vertices). Specify the first point of the spline. Specify the next point of the spline. Continue specifying points as needed. Press Enter to end, or enter c (Close) to close the spline.

  5. Oct 23, 2019 · Try the following. Create a line that is the continuation of the line at #1 (e.g., the red line). You will reference a point on this line to establish a tangency condition at #1. Give the spline command and with osnap end click point #1. Enter the letter T for tangency and click the top end of the red line.

  6. Splines are non-uniform curves, which are used to create irregular shapes. In AutoCAD, you can create splines by using two methods: Spline Fit and Spline CV....

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  8. Feb 11, 2019 · It can be created in AutoCAD with the spline command by specifying “fit points”, points through which the spline passes or “control vertices” (CVs). The CVs generally do not lie on the spline except for the two ends of the spline. You can edit the shape of a spline with the splinedit command or by moving the fit or CV points.

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