Entry door - tongue and groove?
I am making a 1.75” thick entry door and wondering if a simple tongue and groove construction would be adequate. My plan is to use a dado set to cut a .5” wide, 1.5” deep groove in the stiles and rails, in which two 1/2” panels of Baltic Birch plywood will seat. I will make a 1.25” tongue on the ends of the three rails. I figure that because the groove will be a little deeper than normal, I’ll have lots of glue contact. I will also glue the panels in place because the plywood is stable.
I’d like to know if people think this method will stand the test of time. I was going to use loose tenons, but I don’t know why this would be stronger than a deep tongue and groove construction. Thanks.