How to build a Bench Swing
Step 5. Fix the back slats in place and mark for cutting
Temporarily nail a straight edge to the bottom half of the rear seat frame (j) so the back slats will have something to sit on while
they are being fixed in place.
Spread the back slats (p) out evenly between the two end frames and fix to the back slat support (k) and the rear seat frame member (j) with screws. Pre-drill screw holes first through the back slats.
When the back slats are fixed in place, you can draw a pattern of your choice at the top of the back slats. Cut with a jig-saw if the pattern has curved lines or a handsaw will do if the pattern only consists of straight lines.
Step 6. Fit the arm rest
Cut the arm rest (g) to fit around the rear vertical arm support (e) and fix with screws to the horizontal arm supports (f).
Make holes in the appropriate places for the chain cavities.