About Defining Geometry in Part Builder

Geometry features are the basic building blocks for defining the size and shape of the model.

In Part Builder, geometry that you define is constraint based, two-dimensional (2D), and must be attached to a work plane. You can switch between work planes to define different geometry. As you add geometry to a work plane, the geometry features appear under the Geometry folder of the associated work plane.

Important: Avoid using basic AutoCAD geometry commands. AutoCAD geometry is not valid for work planes and cannot be used to create features for part models.

Viewing geometry types

Part Builder provides nine types of geometry you can use to build the model:

Point

Defined by an X and Y coordinate.

Line

Defined by a position and a direction; constrained by a start point and endpoint.

Unbounded Line

Defined by a position and a direction; infinite in length because it has no constraining start point or endpoint.

Circle

Defined by a center point and a radius.

Arc

Defined by a center point and a radius; constrained by a start point and endpoint.

Rectangle

Defined by lines and points that are constrained to maintain start points and endpoints for each side and perpendicular angle.

Oval

Defined by lines, arc, and points that are constrained to create two arcs straight to two lines, with defined start points and endpoints.

Point Reference

Defined by a point in the work plane that is based on a source point selected from a different work plane. A point reference is moved or deleted with the source point.

Project Geometry

Defined by a projection of a modifier on a specified work plane. The project geometry is fixed and cannot be moved in the work plane. It is linked to the modifier and adjusts as the modifier changes.