Coming along great!
On the bench I made, at the holes for the cord to come through, I made the roundovers with a scratch stock in order to not round over the side of the slot that is visible. Just a hand-filed pieze of band saw blade in a wooden block. Worked super fast and also left the ends of the slots crisp. (Hope the photo makes sense)

"The good chair is a task one is never completely done with" Hans Wegner