Home
Parametric Modeling
Create parametric sketches, geometry, and PolyNURBS with construction history and variables.
PolyNURBS
Create free-form solid geometry that is smooth and continuous.
Split
Use the Split tools to split a cage with a loop or split a single PolyNURBS cage face.

Welcome
What's New
Discover new features and enhancements.
Get Started
New to Inspire? Learn the basics here.
Tutorials
Start using Inspire with our interactive tutorials.
Parametric Modeling
Create parametric sketches, geometry, and PolyNURBS with construction history and variables.
- Construction History
  View and edit the construction history of your model.
- Variables
  Create and assign variables to parametrize a model. This allows you to quickly iterate and compare design concepts by tweaking the values of the variables.
- Global References
  Global references are the global origin, axes, and planes shown in the modeling window. They can be helpful when creating and defining your model.
- Sketching
  Create and edit 2D parametric sketch geometry.
- Geometry
  Create and modify parametric surfaces and solids.
- PolyMesh
  Create polymesh objects from other types of geometry and results.
- PolyNURBS
  Create free-form solid geometry that is smooth and continuous.
  - Editing PolyNURBS
    Edit vertices, edges, and faces to modify the shape of a PolyNURBS object.
  - Primitive
    Use the Primitive tools to create a single PolyNURBS solid or surface, either around a selected object or as the starting point for a new model. This is the tool you should start with if you want to build PolyNURBS geometry without wrapping or paving.
  - Fit
    Use the Fit tool to automatically create a new PolyNURBS part on top of existing geometry.
  - Wrap
    Use the Wrap tool to quickly wrap a PolyNURBS solid around an optimized shape. You can create multiple PolyNURBS cages, and bridge the face of one cage to another. You can also wrap a hole or negative space.
  - Pave
    Use the Pave tool to create faces manually on an existing object.
  - Move Bodies
    Use the Move Bodies tool to translate, rotate, or align PolyNURBS bodies.
  - Mirror Bodies
    Use the Mirror Bodies tool to mirror PolyNURBS bodies across a symmetry plane.
  - Add/Remove (+/-)
    Use the Add(+) and Remove(-) tools to modify an existing PolyNURBS cage by adding or removing blocks. This allows you to quickly build the basic shape of a PolyNURBS object.
  - Split
    Use the Split tools to split a cage with a loop or split a single PolyNURBS cage face.
  - Bridge
    Use the Bridge tool to create a bridge between two or more faces of either the same PolyNURBS cage or different cages.
  - Sharpen
    Use the Sharpen tool to control sharpness along the edges of a PolyNURBS. Four levels of sharpness are available, and you can set the sharpening factor manually or automatically.
  - Repair
    Use the Repair tool to close a hole in a PolyNURBS cage.
  - Shell & Offset
    Use the PolyNURBS Shell & Offset tool to offset the vertices of PolyNURBS part bodies and optionally shell the bodies by connecting copied offsets.
  - Shape Variable
    Use the Shape Variable tool to define which directions PolyNURBS cage points can move during PolyNURBS optimization.
  - Subdivision Surface
    Convert a PolyNURBS part to a subdivision surface for faster exit from PolyNURBS tools.
Implicit Modeling
Create implicit models with primitives, lattices, point clouds, fields, offsetting, Booleans, inverting, smoothing, morphing, and filleting.
Structures
Set up your model and run a structural analysis or optimization.
Motion
Set up and run a motion analysis, plot the results, and export the results.
Fluids
Prepare and run a computational fluid dynamics simulation.
Design Explorer
Evaluate designs by using geometric variables and applying a design-of-experiments (DOE) or optimization method. We recommend fully constraining your sketch when sketch variables are used in the design exploration.
Manufacture
Set up and run a basic porosity or thinning analysis.
Print 3D
Prepare and run an additive manufacturing simulation, and export a file for 3D printing.
Rendering
Adjust the materials and environment of objects in the scene to create a photorealistic image.
Inspire Python API
Learn how to access the Inspire Python API including online help, quick start demos, and the Extension Manager.
Reference
View the glossary, frequently asked questions, and errors and alerts.
Keyboard Shortcuts and Mouse Controls
Learn keyboard shortcuts and mouse controls for common operations.

Split

Use the Split tools to split a cage with a loop or split a single PolyNURBS cage face.

Split Cage with Loop

Draw an edge loop around a cage, subdividing the PolyNURBS object to gain more control when editing the cage.

On the PolyNURBS ribbon, select the Split Cage with Loop tool.

Tip: To find and open a tool, press Ctrl+F. For more information, see Find and Search for Tools.
Click the edge of an existing cage to create a loop perpendicular to that edge. Mouse over an existing edge to preview the loop.
The loop is created at the point where you clicked.
Optional: To reposition the loop:
- Drag the loop.
- Hold down Ctrl while clicking the loop, and then use the graphic manipulators.
Right-click and mouse through the check mark to exit, or double-right-click.

Split Faces

Split a single PolyNURBS cage face.

On the PolyNURBS ribbon, select the Split Faces tool on the Split icon.

Tip: To find and open a tool, press Ctrl+F. For more information, see Find and Search for Tools.
Click a point on one edge where you want to split the face.

Tip: Hold down the Alt key to temporarily disable snaps.
Click a second point on one of the face's other edges to split the face.
Right-click and mouse through the check mark to exit, or double-right-click.

Keyboard Shortcuts & Mouse Controls


To	Do this	Notes
Temporarily disable snaps (PolyNURBS tool)	Alt
Change the transparency of the underlying shape (STL or optimization result)	Alt+middle mouse scroll
Add to or remove from the selection Select a loop an enter editing mode	Ctrl
Delete a selected split or loop	Delete
Exit tool	Right-click and mouse through the check mark to exit, or double-right-click.