Has anyone used a dado in the side wall to locate the plywood for their headliner?
My thought is to use a 1/8" router bit and my router edge guide to form a dado to receive the headliner. With any luck it would make a nice clean joint and solve the dilema of trying to trim out any gaps where the headliner and the side walls meet.
The headliner could be cut a little more narrow than the maximum distance between the dados in order to allow for expansion. Stringers would still be used to back up the headliner and to stabilize the side walls.
So would this work? Too much work? Opinions?