STEP (Standard for the Exchange of Product Data) is an ISO standard exchange format used for representing three-dimensional data in a format that can be recognized by multiple programs.

Import

To open, import, insert, and attach a file as a worksession

From the File menu, click Open, Insert, Import, or Worksession > Attach.
In the dialog box, select a supported file type.
Click Open and configure the settings.
When you open a non-3dm file and save the model, its filename will be the default 3dm filename.

Note

Display nested block warning

Always use these settings. Do not show this dialog again.

To turn the message back on

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

To save as or export a Rhino model

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.

STEP schema

Your company standards determine which STEP schema you should use. If you have no standard, choose the default. The STEP schema number makes no difference to the data exported.

Export parameter space curves

Some (not most, and not Rhino) importing applications can make use of the 2-D trimming curves to get a more accurate and faster import. The size of the step file will be larger.

Let importing application set color for black objects

If a Rhino object has color black, no color is assigned to the object in the step file. This will cause the importing application to give the object its default color. This is desirable because black objects look like ink blots in some applications. This option is grayed out if the schema option is AP203ControConfigDesign since that schema does not include color entities.

Split closed surfaces

Always use these settings. Do not show this dialog again.

To turn the message back on

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

STEPTree

Toolbar	Menu
Not on toolbars.	Not on menus.

Toolbar

Not on toolbars.

Not on menus.

The StepTREE command browses the structure of a STEP file.

Steps

Select a STEP file.

STEP (.stp; .step) import/export

Import

To open, import, insert, and attach a file as a worksession

Note

Join surfaces (Uncheck to retain per-face colors)

Do not join polysurfaces with more than ___ faces

Display nested block warning

Always use these settings. Do not show this dialog again.

To turn the message back on

Export

To save as or export a Rhino model

STEP schema

AP203ConfigControlDesign

AP214AutomotiveDesign

AP214AutomotiveDesignCC2

Export parameter space curves

Let importing application set color for black objects

Split closed surfaces

Always use these settings. Do not show this dialog again.

To turn the message back on

Related command

STEPTree

Steps

See also