Petey- thanks! And yes, just wanted to work through how to build this. I don't know God's timing for me, but from my perspective, this is an "early" build.
Awsum55 - thanks. I actually built a jig for on my tablesaw in order to get the top bevel. Before the bevel, I cut the edge so it could slide into the groove. I did use space balls on the sides as I did not want it moving (cut those in half as a whole was just a bit too much for this application). I added a bit of glue in the groove in the middle of the ends so I could get it centered, but still allow for a bit of movement.