Move Boundary
Move boundary edges of a surface in order to extend or trim it.




The Move boundary feature allows you to move boundary edges of a surface in order to extend or trim it. Click the Move boundary feature tool on the toolbar. Select the surface or boundary edges to move. Choose an end condition with the dropdown arrow. By default, Blind is selected. Enter a distance numerically in the dialog, or use the orange arrow in the graphics area. Click the Opposite direction arrow to flip the boundary direction. Check Maintain curvature to make all the extended surface curvature continuous with the original surface boundary. Selecting Up to face or Up to part/surface allows you to select an entity for the boundary end condition. Selecting Up to vertex allows you to select a vertex for the boundary end condition. Click the green checkmark to accept the new boundary.

- Click
to open the Move boundary dialog.
- Select a surface or boundary edges to move:
- Check the Tangent propagation box to extend the surface for all edges tangent to the first edge selection.
- Choose an end condition from the dropdown:
Blind - Enter a distance to extend or trim to.
Up to face - Select a target entity to extend or trim to.
Up to part/surface - Select a part or surface to extend or trim to.
Up to vertex - Select a vertex to extend or trim to.
- To trim a surface or boundary edge, enter a negative distance in the Distance field:
To change directions, click the opposite direction icon
or manually drag the manipulator arrow back:
- For "Up to" end conditions, you can specify an offset in the Offset distance field, and toggle directions with the opposite direction icon
.
- Check the Maintain curvature box to make all the extended surface curvature continuous with the original surface boundary.
-
Click the green check mark
in the upper right corner of the dialog box to apply your changes . Click the
to cancel without applying your changes.

This lists the collection of surface feature tools. This is not an exhaustive list. Additional Feature tools may be used when modeling surfaces. See Surfacing for additional information.
-
Thicken - Add depth to a surface. Create a new part or modify an existing one by giving thickness to a surface and converting it to a solid, adding or removing material from an existing part or surface, or intersecting parts in its path.
-
Enclose - Create a part by selecting all boundaries surrounding an empty space to form a solid. Use any set of surfaces and solids (including planes and faces) that intersect each other or connect at a boundary to create a volume. Create a new part or modify an existing one by adding, removing, or intersecting parts.
-
Fillet - Round sharp interior and exterior edges and define as a standard constant radius, more stylized conic, or variable by selecting Edge fillet. Optionally apply a Full round fillet to create a seamless blend of one or more faces between two opposing sides.
-
Face blend - Round sharp connected or disconnected interior and exterior faces to create a seamless blend between the faces or detach the blend to create new faces, defining a radius or constant width. Further define the blend cross section (rolling ball or swept profile), symmetry, control, trim, constraints, and limits.
-
Delete face - Remove geometry from a part. Select whether to heal the surrounding faces (by extending until they intersect), cap the void, or leave the void open. This Direct Editing tool is especially convenient if you don't have the parametric history of the part, as is often the case with an imported part.
-
Move face - Translate, rotate, or offset one or more selected faces. This Direct Editing tool is especially convenient if you don't have the parametric history of the part, as is often the case with an imported part.
-
Replace face - Trim a face or extend a face to a new surface. This Direct Editing tool is especially convenient if you don't have the parametric history of the part, as is often the case with an imported part.
-
Offset surface - Create a new surface by offsetting an existing face, surface, or sketch region. Set offset distance to 0 to create a copy in place.
-
Boundary surface - Create or add a surface specified by its boundary profiles.
-
Fill - Create a surface (or a part from surfaces) by defining boundaries and refine the surface with boundary conditions (instead of requiring the use of reference surfaces).
-
Move boundary - Move boundary edges of a surface in order to extend or trim it.
-
Ruled surface - Create a new or additional ruled surface from an existing edge or multiple edges of a sketch region.
-
Mutual trim - Trim two adjacent surfaces by extending intersections to complete the trim.
-
Constrained surface - Create a surface from a selection of points or mesh data within a specified tolerance. Display deviations and optimize for performance or smoothness.

Steps
-
Tap
.
- Select a surface or boundary edge to move.
- Adjust the settings in the Move Boundary dialog box to your preference.
- Toggle Tangent propagation to extend the surface for all the edges tangent to the first edge selection.
- Choose an end condition with the side arrow:
Blind - Enter a distance manually to extend or trim to.
Up to face - Select a target entity to extend or trim to. (When Up to face is selected, you can tap the Mate point connector icon to select or create implicit Mate connectors.)
Up to part/surface - Select a part or surface to extend or trim to.
Up to vertex - Select a vertex to extend or trim to. (When Up to face is selected, you can tap the Mate point connector icon to select or create implicit Mate connectors.)
- Trim a surface or boundary edge by tapping the opposite direction switch or manually dragging the manipulator arrow back.
- For "Up to" end conditions, you can toggle Offset distance to enter the desired offset.
- Toggle Maintain curvature to make all the extended surface curvature continuous with the original surface boundary.
- Tap the check mark.

Steps
-
Tap
.
- Select a surface or boundary edge to move.
- Adjust the settings in the Move Boundary dialog box to your preference.
- Toggle Tangent propagation to extend the surface for all the edges tangent to the first edge selection.
- Choose an end condition with the side arrow:
Blind - Enter a distance manually to extend or trim to.
Up to face - Select a target entity to extend or trim to.
Up to part/surface - Select a part or surface to extend or trim to.
Up to vertex - Select a vertex to extend or trim to.
- Trim a surface or boundary edge by tapping the opposite direction switch or manually dragging the manipulator arrow back.
- For "Up to" end conditions, toggle Offset distance to enter the desired offset.
- Toggle Maintain curvature to make all the extended surface curvature continuous with the original surface boundary.
- Tap the check mark.