3D Modeling, Assemblies & Product Design covers the methods used to build digital parts, products and systems. It includes solid, surface, mesh, SubD, parametric, direct and hybrid modeling, along with assemblies, interference analysis and specialized product features such as sheet metal, piping, molds and plastic parts.
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Use this section to compare modeling methods and choose the right workflow for parts, assemblies and complex product geometry.
3D Modeling Fundamentals
Key topics include 3D Coordinate Systems, Work Planes, Reference Planes, Reference Axes, Reference Points, and Construction Geometry. Additional entries will expand the subject with definitions, methods, examples and related standards.
Representative topics: 3D Coordinate Systems, Work Planes, Reference Planes, Reference Axes, Reference Points, Construction Geometry, Sketches, Profiles.
Solid Modeling Features
Key topics include Extrude, Revolve, Sweep, Loft, Rib, and Web. Additional entries will expand the subject with definitions, methods, examples and related standards.
Representative topics: Extrude, Revolve, Sweep, Loft, Rib, Web, Shell, Thicken.
Surface Modeling
Key topics include Surface Extrusion, Surface Revolution, Surface Sweep, Surface Loft, Boundary Surfaces, and Fill Surfaces. Additional entries will expand the subject with definitions, methods, examples and related standards.
Representative topics: Surface Extrusion, Surface Revolution, Surface Sweep, Surface Loft, Boundary Surfaces, Fill Surfaces, Surface Trimming, Surface Extension.
Advanced Surfacing
Key topics include G0 Positional Continuity, G1 Tangent Continuity, G2 Curvature Continuity, G3 Flow Continuity, Class-A Surfacing, and Zebra Analysis. Additional entries will expand the subject with definitions, methods, examples and related standards.
Representative topics: G0 Positional Continuity, G1 Tangent Continuity, G2 Curvature Continuity, G3 Flow Continuity, Class-A Surfacing, Zebra Analysis, Curvature Analysis, Reflection Line Analysis.
Mesh and SubD Modeling
Key topics include Mesh Creation, Mesh Editing, Mesh Smoothing, Mesh Repair, Subdivision Modeling, and Sculpting. Additional entries will expand the subject with definitions, methods, examples and related standards.
Representative topics: Mesh Creation, Mesh Editing, Mesh Smoothing, Mesh Repair, Subdivision Modeling, Sculpting, Retopology, Mesh-to-Solid Conversion.
Parametric Modeling
Key topics include Sketch Constraints, Driving Dimensions, Driven Dimensions, Parameters, Equations, and Design Tables. Additional entries will expand the subject with definitions, methods, examples and related standards.
Representative topics: Sketch Constraints, Driving Dimensions, Driven Dimensions, Parameters, Equations, Design Tables, Configurations, Part Families.
Direct and Hybrid Modeling
Key topics include Face Editing, Push-Pull Editing, Move Face, Offset Face, Delete Face, and Replace Face. Additional entries will expand the subject with definitions, methods, examples and related standards.
Representative topics: Face Editing, Push-Pull Editing, Move Face, Offset Face, Delete Face, Replace Face, Imported Body Editing, Hybrid Parametric-Direct Workflows.
Assembly Modeling
Key topics include Components, Subassemblies, Assembly Constraints, Mates, Joints, and Degrees of Freedom. Additional entries will expand the subject with definitions, methods, examples and related standards.
Representative topics: Components, Subassemblies, Assembly Constraints, Mates, Joints, Degrees of Freedom, Top-Down Assembly Design, Bottom-Up Assembly Design.
Assembly Analysis
Key topics include Interference Detection, Collision Detection, Clearance Analysis, Contact Analysis, Mass Properties, and Center of Gravity. Additional entries will expand the subject with definitions, methods, examples and related standards.
Representative topics: Interference Detection, Collision Detection, Clearance Analysis, Contact Analysis, Mass Properties, Center of Gravity, Motion Envelopes, Exploded Assemblies.
Specialized Product Features
Key topics include Sheet Metal, Weldments, Frames, Structural Members, Piping, and Tubing. Additional entries will expand the subject with definitions, methods, examples and related standards.
Representative topics: Sheet Metal, Weldments, Frames, Structural Members, Piping, Tubing, Cable Routing, Wire Harnesses.
How CADpedia Organizes This Knowledge
Each topic is developed as a separate encyclopedic entry. Definitions explain the terminology, reference pages document standards and formats, software profiles describe platforms, and practical entries connect the concepts to professional workflows. Related pages are linked across categories so readers can move from theory to software, standards, files and industry applications without repeating the same information.