Last jig for a while. I promise. I made a finger joint jig today. This one is for 1/2" joints. I started by making the key. That took about 20 passes on the table saw shaving off micro layers until I was happy. Then I cut the keyway into a board. The hardest part is aligning it to get a tight fit. It’s not perfect but I’m happy with it. I think glue will full up most of the small space. If not, a little filler goes a long way. The board is bolted to my crosscut sled so it can be removed when not in use. I want to make a 1/4" one too, but not today.
-- Losing fingers since 1969