1. INTERPENETRATIONS AND DEVELOPMENTS
Hoppers (Containers) and transition pieces
Gr 12
LO3: AS 3.1; 3.2; 3.5; 3.7 & LO4: AS 4.1; 4.2; 4.3

2. Insert the fold lines

3. Label the points

4. Draw in the joint (seam) line

5. Find the true length of a2

6. Copy the length of ad. Always start on the side opposite the joint (seam) line. Draw the triangle a1d using the true length.

7. Mark the true length of 1;4 and 1;2
Mark the true length of 1;4 and 1;2. Intersect with true length of a2 and d4

8. Repeat with the rest of the sides

9. Mark of the length of CP and BP draw in the joint (seam) line
Mark of the length of CP and BP draw in the joint (seam) line. NB the angle between the joint and base line must be 90°.