Steps 4 to 6
Step 4. Add the side frames to the seat frame
Fix the side frames to the seat frame as shown in the drawing.
Position the top of the seat frame 15″ (380mm) up the legs.
Step 5. Add the backrest slats
Fix piece [L] (the table frame rear support) to the ends of the armrest supports [E].
Then fix the backrest slats to pieces [A] and [L].
Two of the backrest slats [P] will need a bottom corner cut out in order to fit around the intermediate cross members [B].
Fix pieces [M] to the back of the backrest slats to prevent the slats from warping.
Make the cut-out with a jigsaw or a handsaw.
Step 6. Add the table frame
Make the front table frame up as shown in the drawing above, then fix it to the inside of the seat-frame front member [A] between the two intermediate
cross members [B]. Make the bottom of the table frame flush with the bottom of
the seat-frame front member [A], and the top of the table frame should be the same height as the top of
back piece [L].