[Cherryville Chuck]

Just like Nick suggested.

 

[Cherryville Chuck]

Are floating tenons strong enough to support the rails on a bed headboard? Not the sides as I have hardware to help with that. thanks, Tom

It’s no different than a single mortise and fixed tenon. You’re just depending on glue to hold both ends to the tenon instead of just one. Like Charley said it can be easy to make a mortise where making a tenon would be very difficult.

Using a router to make a tenon that’s centred on a board with a straight edge has one potential problem and that’s getting the shoulders on each side dead even with each other. If they aren’t there will be a gap under one. The floating tenon eliminates that potential problem. However, on something like a bed frame rail you only need a shoulder on one side because the other side is only visible if you’re taking the bed apart.