3D Modeling in AutoCAD

ACAD 3D Model

3D Co-ordinates

Draw a line using the two systems

UCS - RIGHT HAND RULE  

WCS, UCS, Surface

Constructive solid geometry (CSG) Constructive solid geometry (CSG) is a technique used in solid modeling. CSG is often a modeling technique used in 3D computer graphics and CAD. Constructive solid geometry allows a modeler to create a complex surface or object by using Boolean operators to combine objects. Often CSG presents a model or surface that appears visually complex, but is actually little more than cleverly combined or de-combined objects

The simplest solid objects used for the representation Primitive Solids The simplest solid objects used for the representation are called primitives.

wedge Torus

Boolean Operations UNION: combines two or more solids into a single object SUBTRACT: removes the volume of one solid from another INTERSECT: finds the interference area of solids objects and retains that volume

Union

Subtract

Intersect

Slice

CHAIR – DIMENSIONS IN INCHES

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