1. 3D Modeling in AutoCAD

2. ACAD 3D Model

3. 3D Co-ordinates

4. Draw a line using the two systems

5. UCS - RIGHT HAND RULE

6. WCS, UCS, Surface

7. 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

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

9. wedge
Torus

10. 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

11. Union

12. Subtract

13. Intersect

14. Slice

15. CHAIR – DIMENSIONS IN INCHES

16. Thank you