Anyone see Rough Cut Woodworking today?
On the table top he was building. after he jointed the edges for glue-up. He purposely used a hand plane on the edge of the board to create a "Dish" on the edge so when you put the two edges together, there is a gap in the middle. He drew the boards together during glue-up.
I have never seen this before. Why would you do that over a true jointed edge?