Deskop platform icon iOS platform icon Android platform icon This functionality is available on Onshape's browser, iOS, and Android platforms.

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

In the Feature toolbar:

Feature toolbar with Move boundary feature icon highlighted

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.

Steps

  1. Click Move boundary icon.

    Move boundary dialog

  2. Select a surface or boundary edges to move:

    Example of feature before move boundary tool is usedExample of a feature with an edge selected for move boundary tool

  1. Adjust the settings in the Move boundary dialog box to your preference.

    1. Choose an end condition with the dropdown arrow:

    Move boundary dialog with end condition dropdown open

    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.

    1. To trim a surface or boundary edge, you have the option to enter a negative distance in the Distance field of the dialog box:

    Move boundary dialog box with Distance field pointed to

    Click the opposite direction icon Opposite direction arrow icon, or manually drag the manipulator arrow back (shown below):

    Example of Move boundary feature being used to trim an edge

     

    1. Check the box next to Maintain curvature to make all the extended surface curvature continuous with the original surface boundary.
    2. Check the box next to Tangent propagation to extend the surface for all edges tangent to the first edge selection.

    Move boundary dialog box with arrows pointing to Maintain curvature and Tangent propagation features

 

  1. Click the green check mark Accept checkmark icon in the upper right corner of the dialog box to apply your changes . Click the Red X delete icon to cancel without applying your changes.

Steps

  1. Tap Move boundary icon.
  2. Select a surface or boundary edge to move.
  3. Adjust the settings in the Move Boundary dialog box to your preference.

    Move Boundary Dialog for iOS

    1. Choose an end condition with the side arrow:

      2. 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 inferred 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 inferred Mate connectors.)

    2. Trim a surface or boundary edge by tapping the opposite direction switch or manually drag the manipulator arrow back.
    3. Tap the Maintain curvature switch to make all the extended surface curvature continuous with the original surface boundary.
    4. Tap the Tangent propagation switch to extend the surface for all the edges tangent to the first edge selection.
  4. Tap Checkmark.

Steps

  1. Tap Move boundary icon.
  2. Select a surface or boundary edge to move.
  3. Adjust the settings in the Move Boundary dialog box to your preference.

    4. Move boundary dialog for Android

    1. Choose an end condition with the side arrow:

      2. 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.

    2. Trim a surface or boundary edge by tapping the opposite direction switch or manually drag the manipulator arrow back.
    3. Tap the Maintain curvature switch to make all the extended surface curvature continuous with the original surface boundary.
    4. Tap the Tangent propagation switch to extend the surface for all the edges tangent to the first edge selection.
  4. Tap Checkmark.