Tutorial Introductions to CAD

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TUTORIAL INTRODUCTIONS TO CAD. AutoCAD 2000 in 3D - A Monkish Shot Tower. Jim Plume. This tutorial introduces the concepts and techniques used to build 3D …

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1 Updated: May 2000 AutoCAD 2000 in 3D - A Monkish Shot Tower
UNIVERSITY OF NEW SOUTH WALES
FACULTY OF THE BUILT ENVIRONMENT
TUTORIAL INTRODUCTIONS TO CAD
AutoCAD 2000 in 3D - A Monkish Shot Tower
Jim Plume
This tutorial introduces the concepts and techniques used to build 3D models in
AutoCAD 2000. As a vehicle for learning these techniques, we develop a model
of a whimsical structure that I have called the Monkish Shot Tower after a group
of imaginary Monks who have refined the technology of manufacturing lead shot
for firearms, and the like. The tower is designed around the perfect number 7,
features an external spiral stair, an elaborate canopy on top, and a hole down
the centre. The final structure is illustrated in Figure 1 below.
This tutorial will introduce the following concepts and techniques:
?simple solid modelling with solid primitives & CSG operations (the tower);
?construction of complex solid objects (stair and landing);
?user coordinate systems and positioning of objects (external stairs);
?advanced use of the CSG operations (tapering the stairs);
?simple surface modelling (the roof canopy and handrails);
?surface modelling versus solid modelling…