Question 1
(1) Figure 1 shows the plan and end elevation of a bearing support in first angle orthographic projection.
Make a freehand isometric drawing of the block, making K the lowest point
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