First, Consider Your 3d And Spline Data

One common problem is how to configure your files and then program your CAM so that your machine can run your work effortlessly. Most CNC controls can only interpret lines and arcs, so any other form that is not described by these entities must be converted into something usable. Common things that need to be converted are splines, i.e. general NURBS curves that are not lines or arcs, as well as 3D surfaces. A few desktop machines systems do not understand circular arcs, so all need to be converted into polylines.