With all mortises complete, time to make slip tenons. I mill the stock to size (3/8" thick by 3/4" wide, in this case) then round over the edges on a "router table". I like featherboards, they keep things safe and consistent. When rounding over the edges, I'm working with long pieces and not the short piece sitting on the infeed side of the table. Last step is to cut the slips to length using a tablesaw setup (at right).