FIG. 19. SKETCH OF CHAIR SEAT OF ODD SHAPE, SHOWING METHOD OF FINDING LOCATION OF HOLES.
When the working lines are determined, the centers of the front and back lines are located. The lines connecting corresponding holes on the front and back rails must be parallel to the line connecting the center holes on these rails. This rule applies to the locating of the holes on the side rails. It also applies to any seat of odd shape. The distance between holes will vary somewhat at different places on the seat frame. This is the result of working to rule, and is necessary to keep strands equidistant and parallel. At times respacing at several places will be necessary. When it is, simply redivide into as nearly the given dimensions as possible.
FIG. 20. FIRST STEP HALF COMPLETED.
FIG. 21. FIRST STEP COMPLETED. SECOND BEGUN.