re: Mortise and Tenon on curved top rail

Yeah, I was originally thinking I would use a M&T jig for the router, which would be fine until you start getting into the curve. Even at the maximum depth for my router, it won’t reach deep enough into the curve for the middle slats (if I kept the bottom straight). If I cut the bottom to shape, the positioning in the M&T jig will be a bit sketchy. I’m thinking of using a collet extender in a router table setup, with starting and stopping points marked on a temporary plywood fence. The table top will have to have a temporary piece of plywood on top with a hole for the bit, due to the length of the board.