Parasolid (.x_t) Export

Parasolid is a geometric modeling kernel.

On the File menu, click Export Selected or Save As.
In the dialog box, the Files of type list displays the currently supported file types for export.
In the Files of type box, select the supported file type.
In the File name box, select or type a file name.
Specify what is to be saved.

Options
Save small	Though clearing the render meshes makes the file smaller, it will shade and render more slowly the next time you open the file.
Save geometry only	Saves geometry objects only. No layers, materials, properties, notes, or units settings are saved. This is similar to exporting the objects. A new file is made, but it does not become your active Rhino model.
Save textures	Embeds external textures used by materials, environments and decals into the model.
Save plugin data	Saves data attached to objects or the document by plug-in applications.

If the export can be configured, click the Options button to specify export settings.
If the file type creates only mesh objects, in the Polygon Mesh Objects dialog box, specify the mesh settings.

X_T Export Options

Saves the current settings and turns off the dialog display.

Click the Options button in the appropriate Save, Export, Open, Import, or Insert dialog box.

Parasolid files are always in meters. If Rhino units are set to a real-world unit other than meters, the exported geometry will be scaled by the appropriate factor.
In general, your model's objects should be joined solids that have no naked edges. Use the Properties command to ensure your models are closed solids, and the ShowEdges command to ensure there are no naked edges.
Simple planes are supported as Parasolid primitives. A simple plane is one that is defined in Rhino as four control points arranged in a rectangle. Planes are important primitives. Many feature-based modelers (SOLIDWORKS in particular) only allow sketching on planar surfaces defined by a plane primitive.

See also