FAQ > SelfCAD Editor > What is the difference between the Extrusion and Add thickness tools of SelfCAD?
What is the difference between the Extrusion and Add thickness tools of SelfCAD?

Both tools are used in converting polygons into 3D models but the difference is the extrusion tool creates a surface model (shape design) where’s add thickness creates a solid model (geometric description of the model). See this video to learn more.

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