### Importing an STL File

The stereolithography (STL) format, an ASCII or binary file used in manufacturing, provides a list of the triangular facets that describes a computer generated solid model. This format is the standard input for most rapid prototyping machines.

Sample Imported STL File

To import an STL file,

1. Select the File | Import | STL... menu option. An Open dialog box will appear.

2. Navigate through the available directories until you find the directory containing the desired STL file and select that file. The STL file can be in ASCII or binary format.

3. Click the Open button. Planner imports the data as a list of facets that form a solid model.