Exercise 9: How to make an irregular joint

(9) How to join two sheets of heavy paper or cardboard
along an irregular curve.

1. Paste down (or rubber cement)
   the first sheet on a board (Fig. 1).----PROBLEM:
                                           SOLUTION:



2. Paste the second sheet partly
   over the first and mark the
   irregular curve on it (Fig. 2).---------PROBLEM:
   Carefully cut along the joint           SOLUTION:
   through both sheets, removing
   the extra pieces of paper that
   result.



3. Reset the sheets along the cut
   (Fig. 3) and you should have a----------PROBLEM:
   perfect joint.                          SOLUTION: