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
Insert the fold lines
Label the points
Draw in the joint (seam) line
Find the true length of a2
Copy the length of ad. Always start on the side opposite the joint (seam) line. Draw the triangle a1d using the true length.
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
Repeat with the rest of the sides
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°.