The Patch command creates a surface, also called a boundary patch, that replaces a missing face on a surface or solid body in Fusion.

Design > Surface > Create > Patch

Feature tab

Select geometry and define the patch settings.

Boundary Edges

Select the edges that surround the area to be patched.

Group Edges

Check to group all selected edges together and control Continuity and Tangency Weight for all edges at once. Uncheck to list each edge in the dialog and control Continuity and Tangency Weight separately for each edge.

Continuity

Continuity controls the transition between the patch and the selected edges.

• Connected (G0): Applies positional continuity to surface transitions.
• Tangent (G1): Applies tangent continuity to surface transitions.
• Curvature (G2): Applies curvature continuity to surface transitions.

Tangency Weight

Increase or decrease the scale of tangency weight.

Interior Rails/Points

Defines patch interior constraints.

Enable Chaining

When selected, clicking a single edge selects all adjacent edges.

Operation

Select an operation to control how the feature affects the design.

• New Body: Creates a new body in the active component.
• New Component: Creates a new body in a new component.

Analysis tab

Lets you analyze the quality of surface curvature on the previewed result in the canvas.

Analysis Type

Select an analysis type to visualize the quality of surface curvature on the selected body.

Type	Description
None	Displays no analysis.
Zebra	Displays alternating black and white stripes on a body to help you analyze surface curvature.
Curvature Map	Displays a color gradient on a body to help you analyze areas of high and low surface curvature.
Isocurve	Applies UV mapping and curvature combs to help you analyze the quality of the surface curvature.

Bodies

Select bodies to analyze.