Part 2 of assemble the backs. I like to assemble the boards of the backs as a unit, not what the plans call for. This give me the arch and spacing more to my taste and easy to hold the boards for predrilling all screw holes. Only the middle board for the arm attachment do i mark on the back but hold off on drilling until I am sure. With its angled edge there is no correction. Also this has only so much overhang to attach to the ends of the arms in these plans it is easier to remake this board and not remake the arms. So the bottom is an 8 inch by 24. The full length is 36 at the middle and about 33 at the side edges after the cut. So now i see spacing and look. Also the top cross piece is able to be cut to length or width since we are looking at the back of the unit. In PA I liked this better for water runoff, the plans had the bottom board on the front and I saw that as a pocket for water to collect. We are going to mount 2×4 corner blocks inside the frame so this will keep it square and not just screws on the sides to this bottom board and the glue. Another point why my older ones lasted almost 20 years. You can see in this step where you will predrill two screws per board in the top and bottom cross piece. Recheck any for flaws, knots or checks. When i assemble this into the chair frame, I will have the chair sideways and screws ready into the side legs and the arms dry mounted in the front. the back cross board ready to clamp on. Its been over 7 years since i made the last 2 chairs but those short cut steps of working by yourself you learn and don’t lose too fast after so many. More sanding and routing to dao and Painting in the slats will be easy not like 1/4 inch slats space.