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ORTHOGRAPHIC PROJECTION. HOW TO LAYOUT YOUR DRAWING VIEWS. FIRST-ANGLE PROJECTION. The U.S. and Canada uses Third-Angle Projection. The rest of the world uses first-angle projection. All countries start with a FRONT VIEW. THIRD- ANGLE PROJECTION.
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ORTHOGRAPHIC PROJECTION HOW TO LAYOUT YOUR DRAWING VIEWS
FIRST-ANGLE PROJECTION The U.S. and Canada uses Third-Angle Projection. The rest of the world uses first-angle projection. All countries start with a FRONT VIEW.
THIRD- ANGLE PROJECTION THIS IS THE LAYOUT USED IN THE UNITED STATES & CANADA.
SELECTING A FRONT VIEW THE CRITICAL PART OF LAYING OUT YOUR DRAWING IS SELECTING YOUR FRONT VIEW. • MINIMAL HIDDEN LINES • STABLE - SO HEAVIEST PART IS ON BOTTOM • USE THE MOST BASIC PROFILE
COMMON ERROR # 1 KA-POW!
COMMON ERROR #2 BOOM!
COMMON ERROR #4 DON'T BE BEHIND THE EIGHT BALL!
SUMMARY: THE U.S. AND CANADA USE THIRD-ANGLE PROJECTION FOR DRAWING LAYOUT. THE MOST CRITICAL PART OF THE LAYOUT IS THE SELECTION OF THE FRONT VIEW FRONT VIEW SHOULD SHOW: • THE MOST BASIC PROFILE • THE FEWEST HIDDEN LINES • THE MOST STABLE POSITION