PROCEDURES
        
        
          
            18
          
        
        
          As we make our wooden puzzle, we will have to pay special attention to health and safety rules.
        
        
          TANGRAM
        
        
          ❚❚
        
        
          The base of the box.
        
        
          ❚❚
        
        
          The holder for the puzzle and the puzzle itself.
        
        
          ❚❚
        
        
          The holder for the puzzle and the catch for closing it.
        
        
          ❚❚
        
        
          The top of the box.
        
        
          The box is made from four pieces, glued together when
        
        
          they’ve been prepared.
        
        
          Look at the picture and identify the parts of the puzzle.
        
        
          Instructions
        
        
          1.
        
        
          Mark and cut out the four equal parts.
        
        
          2.
        
        
          Mark and cut out the outline of the puzzle in two
        
        
          of the pieces so that they’re in the same position.
        
        
          3.
        
        
          Sand the inner edges of the pieces and the outline
        
        
          of the puzzle so that they fit together easily.
        
        
          4.
        
        
          Assemble the pieces putting glue between the two
        
        
          outlines, the bottom edge, the base, the cover and
        
        
          the top. Leave these pieces together as they dry
        
        
          but don’t glue any of the puzzle pieces so you can
        
        
          get them out once
        
        
          everything is dry.
        
        
          5.
        
        
          Cut out the puzzle
        
        
          pieces.
        
        
          6.
        
        
          Sand them and
        
        
          the outer edges of
        
        
          the box.
        
        
          7.
        
        
          Paint or varnish
        
        
          the puzzle pieces.
        
        
          To make a
        
        
          
            tangram
          
        
        
          and its box you have to divide the board in four equal parts. These parts will be:
        
        
          Making a wooden puzzle
        
        
          HEALTH AND SAFETY RULES
        
        
          Before
        
        
          ❚❚
        
        
          Check that the equipment and tools are in perfect
        
        
          condition.
        
        
          ❚❚
        
        
          Revise how to use the equipment and tools.
        
        
          During
        
        
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          Clamp the pieces appropriately with a bar clamp or
        
        
          bench vice so they don’t move.
        
        
          ❚❚
        
        
          Pay close attention to sharp objects like the compass
        
        
          and the awl so you don’t hurt yourself.
        
        
          ❚❚
        
        
          Keep your hands behind the blades of cutting
        
        
          tools.
        
        
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          Don’t blow on sawdust because it can get in your
        
        
          eyes and cause serious damage.
        
        
          ❚❚
        
        
          You are advised to use goggles or gloves when
        
        
          necessary.
        
        
          ❚❚
        
        
          Try to be neat and keep only the tools you are using
        
        
          for each job on the workbench.
        
        
          After
        
        
          ❚❚
        
        
          Clean the equipment and tools you’ve used and if
        
        
          necessary, check that they are in perfect condition.
        
        
          ❚❚
        
        
          Put away the tools and materials that you’ve used
        
        
          when you finish.
        
        
          ADVANCE
        
        
          EDITION