Working with Spline

Splines are mathematical curves called non-uniform rational B-splines (NURBS) that can be used to make organic shapes in AutoCAD. An example of a drawing made with a spline is this top view of a computer mouse. Making this shape with regular Draw tools, such as Circle, Arc, and Line, will be difficult, as shown:

Figure 3.42: A simple top view of a computer mouse made with the spline tool

In AutoCAD, there are two ways of making spline. They are spline fit, which is defined by the fit points, and spline control vertice (CV), which is defined by the CVs (or control vertices) that act as a frame for the curve.

Spline fit

In the expanded Draw panel of the Home tab, you will find the Spline tool, as shown in the following figure. Alternatively, you can use its command alias, SPL:

Figure 3.43: The spline fit option in the expanded Draw panel

In the next example, we will make a simple spline and then we will...