Creating a design with solid modeling

…Now, I'll introduce you to the basic concepts behind solid modeling,…and some tips for using solid modeling software for 3D printing.…Solid modeling is a type of CAD workflow.…In a solid modeler, the designs you create will always have volume.…And that's great for 3D printing, because it…means the designs will be watertight and manifold.…Common solid modelers are Autocad,…SolidWorks, Alibre Design, Inventor, 123D Design, and TinkerCAD.…Solid models can be made by extruding 2D shapes into 3D volumes or using solid…model primitives like boxes, cylinders, spheres, toruses, pyramids and wedges.…

Other common ways of creating geometry includes revolving shapes…around an axis or sweeping a shape along a path.…Lofting creates a solid object between two or more shapes.…To build a design in a solid modeler, you combine your objects in three ways.…These are called Boolean operations.…Let's combine a cube and a sphere, to demonstrate the…three different Boolean operations you'll find in most CAD programs.…First is a union, or addition.…