Face-based addition or subtraction



Tool set


Extrude Face




3D Modeling


The Extrude Face mode creates perpendicular faces as volume is added or subtracted. Objects that can be modified include 2D planar objects, 3D polygons, planar NURBS curves, and a planar or non-planar face of any solid.

To add to or subtract from a solid in Extrude Face mode:

Click the tool and mode.

Click the desired face of a solid, planar object, or planar NURBS curve.

If needed, the Select Face dialog box opens to help select the correct face, as described in Selecting the edges and faces of a solid. To select the back faces of solids, press the Alt key (Windows) or Option key (Mac) while selecting.

The cursor changes to a double-headed arrow. Move the cursor to expand (Add mode) or decrease (Subtract mode) the solid volume, or create an extrusion from the 2D planar object or NURBS curve. The cursor direction determines whether volume is added or subtracted. The distance of the protrusion or cutout can also be specified by entering a value in the Distance field on the Tool bar or floating Data bar. The new solid is previewed on the drawing.




Click at the desired location to edit the solid.

Direct modeling with the Push/Pull tool

Moving the face of a solid

Curve-based addition or subtraction 


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