yes it they are large enough...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
couldn't find the post...Hi tom.
Exactly six years ago I had the same problem while I was doing a craddle for Sabrina, my granddaugther.
Please check out my post "A very simple jig" posted at 04/05/2014 to see how I solved that.
use a shoulder plane or a skew plane....Then I think you have it...handsaw(pull saw), chisel, router plane (see Lee Valley or DIY - Youtube). Quite a few videos for a DIY router plane...