DesignSpark Mechanical Online Help

Extending and extruding surface edges


To offset or extrude a face

  1. Select the PullClosed tool in the Edit group on the DesignClosed tab. The Select tool guide on the right side of the Design windowClosed should be active.

  2. Select the face or surface you want to offset or extrude.

    You can select multiple surfaces and faces of solids to offset or extrude them simultaneously.

  3. (Optional) Add edges to your selection.

    Select the edges of the face that you want to extrude when you pull. (Any unselected edges are defined by the neighboring geometry during the pull, creating an offset instead of an extrusion.)

  4. (Optional) Select the Direction tool guide , then click the straight line, axis, or edge if you want to offset or extrude in a different direction.

    You can also Alt+click a straight line, axis, plane, origin axis, or edge. Sometimes DS Mechanical guesses your intent incorrectly when you Alt+click the direction line. If this happens, just use the Direction tool guide to correct it.

    The pull direction is shown in blue and the pull arrow is reoriented.

  5. Click and drag the face in the direction of the PullClosed arrow.


    Dragging a: Does this:

    SolidClosed face

    Offsets the face in its natural offset direction

    SolidClosed face and all its edges

    Creates an extrusion

    SurfaceClosed face

    Thickens or thins the face

    CornerClosed edge of a solid

    Creates a round, chamfer, or extrusion, depending on the selected option

    RoundClosed or chamfer

    Offsets the round or chamfer

    Variable round

    Uniformly offsets the variable round

    Cylinder, torus, or cone

    Offsets the cylinder, torus, or cone


    To dimension the offset, type the distance you want to pull and press Enter.

    Press and hold Ctrl to offset a copy of the face as a surface.

    Neighboring faces automatically extend to bound the offset face.

    You can also use the Up To tool guide to pull up to any edge, plane, surface, or face in your design. If you pull a round, chamfer, or cylinder with the Up To tool guide, and pull up to similar geometry, the radius or offset is changed to the dimension of the Up To face you select.


The following options are available in the PullClosed tool. Once you select the edge or face to pull, select these options from the Options panelClosed, or right-click and select them from the mini-toolbar:



Select the Add option to only add material. If you pull in a subtractive direction, no change will occur. You can combine this option with other PullClosed options.


Select the Cut option to only remove material. If you pull in an additive direction, no change will occur. You can combine this option with other PullClosed options.

No Merge

Pulls without merging into other objects even when the object pulled intersects with an existing object.

PullClosed Both Sides

Select a single, detached edge, imprinted edge, or surface, then click this option to pull both sides of the edge or surface at once.


Select this option, then click to connect a ruler, oriented along the pull axis, to an anchor edge or face. You can use the ruler to dimension the pull. The direction must be specified to successfully create a ruler dimension. Press Esc to cancel the ruler dimension.

Up to

Pulls the element so it mates with the surface of the selected body or be pulled up to a plane through the selection. You can find this option in the mini-toolbar and it is the same as the Up To tool guide.


Selecting a face to offset


Selecting a face and edges to extrude


Selecting a face and edges, and setting a direction to extrude in a direction



Pulling an inner cylindrical surface up to an outer surface to create a solid ring


© Copyright 2020 Allied Electronics, Inc. All rights reserved.