The DM2400, fortunately, also uses polar coordinates, and circular arc interpolation, in addition to the normal cartesian coordinates and linear interpolation. This means that the segments for crossing out are easily defined, but more importantly, arcs are cut with a very smooth curve, such that minimal polishing is required to bring them to a good finish.

The diagram shows the computations required to utilize this feature. For instance, to go from Pt 2 to Pt 3, the command is to GO RELATIVE ANGLE for the necessary angle, and a smooth curve is cut.

In addition, the Dyna Language has a looping capability, which simplifies the programming for the number of spokes and the for number of passes. The computer program generates all this from the input parameters as shown on the Programming page.