Surface Module

    From FreeCAD Documentation
    This page is a translated version of the page Surface Workbench and the translation is 0% complete.
    Outdated translations are marked like this.
    Surface workbench icon


    The Workbench Surface.svg Surface Workbench provides tools to create and modify simple NURBS surfaces. These tools have a similar functionality to the Part Builder.svg Part Builder tool when the Face from edges option is used. However, unlike that tool, the tools of the Surface Workbench are parametric and provide additional options. In this respect, the tools in this workbench are similar to PartDesign AdditiveLoft.svg PartDesign AdditiveLoft and PartDesign AdditivePipe.svg PartDesign AdditivePipe.

    Some of the features provided are:

    • Creation of surfaces from boundary edges.
    • Alignment of the curvature from neighboring faces.
    • Constraining of surfaces to additional curves and vertices.
    • Extension of faces.
    • A mesh can be used as a template to create spline curves on its surface.

    Surface example.png


    The Surface Workbench intends to create faces with shapes, which is not possible to do with the standard tools in other workbenches.

    Toy Duck.png

    Surface created with sketches placed in datum planes with the tools of the PartDesign Workbench

    The Surface Workbench integrates with other workbenches of FreeCAD. The above example was created from Sketcher NewSketch.svg Sketches placed on PartDesign Plane.svg PartDesign Datum planes in the Workbench PartDesign.svg PartDesign Workbench. The design can be fully parametric if all datum planes and sketches are defined accordingly. In most cases it is sufficient to draw a closed sketch to define the boundary of a face, and then use different options to further modify its shape.

    The generated surface cannot be placed inside a PartDesign Body.svg PartDesign Body. However, the generated surface can be contained inside a Std Part.svg Std Part together with the associated PartDesign Body.svg PartDesign Body that holds the datum planes and sketches. The non-parametric Part Builder.svg Part Builder tool can then be used in order to create a shell and finally a solid.


    • Surface Filling.svg Filling: fills a series of boundary curves with a surface.
    • Surface Sections.svg Sections: creates a surface from edges that represent transversal sections of surface.
    • Surface ExtendFace.svg Extend face: extrapolates the surface at the boundaries with its local U parameter and V parameter.
    • Surface BlendCurve.svg Blend Curve: creates a Bezier curve between two edges, with desired continuity.