Creating an arbitrary surface or any geometric element in FreeCAD

Creating an arbitrary geometric element, such as a surface or a polygon, is a task common in CAD.

FreeCAD provides two ways to do so in its Part module.

The first approach is called Create Primitives, where you specify the parameters to define a geometric element. The menu is Part -> CreatePrimitives. See

An example is below.

The second approach is called Shape Builder, where you build a new shape from elements defined earlier, such as creating a face from edges or vertexes. The menu is Part -> Shapebuilder. See

A good reference of all functions that Part module provides can be found here

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