#### 2D or 3D Best Fit Alignments

Best Fit Alignments can be either two or three dimensional. There is a very significant difference between a 2D and a 3D best fit.

- A 2D Best Fit alignment requires an initial alignment. The alignment is created in the specified workplane and is based on the current alignment.

- A 3D Best Fit alignment uses the raw (machine) data and correlates it to the theoretical values. It does NOT use a previous alignment but creates a completely new one.