Observation

Majority of the candidates could not draw the isometric view correctly: in most cases the, linework is poor and the curves were inappropriately drawn.

FREEHAND SKETCH THE ISOMETRIC VIEW OF A BLOCK GIVEN IN FIRST ANGLE ORTHOGRAPHIC PROJECTION

The solution is shown below:

MAJOR REQUIREMENTS FOR THE CONSTRUCTION OF THE BLOCK

• Sketching the casting in isometric      
• Making ‘K’ the lowest point
• Resemblance                                          
• Proportionality                          
• Sketching face A                       
• Sketching face B                        
• Sketching face C                        
• Sketching face D                       
• Sketching face E                        
• Sketching face F (3 Holes)                  
• Sketching face G and H
• Neatness and quality of lines