Shaped and sanded the top back slat, and permanently attached the back to the seat frame. Once the back was attached, I cut the angled piece to size and flushed it up with my hand plane.
Next up is attaching the end pieces – something I am kind of nervous about. The reason why is illustrated in these sketchup pics:
The back/side of the seat frame are about 1 3/4” tall, and each of the existing screws is 1/2” from the top/bottom of the piece. That means I have about 3/4” to put two screws through – not a lot of room for mistakes :/ The plan calls for an angle brace under this corner to strengthen it, so along with some glue hopefully I have nothing to worry about.
But if there’s one part of this plan I think was poorly designed it’s this part. Not only are there all these screws, but there are the screws coming down from the top (through the seat slats). I actually clipped about 1/8” off each of the ones that are over the screws so they wouldn’t bottom out on the 2 1/2” screws coming in horizontally.
I hope to get the ends attached tonight or tomorrow, so stay tuned.
-- The difference between being defeated and admitting defeat is what makes all the difference in the world - Upton Sinclair, "The Jungle"