At this time I would like to say that on my guitar type projects I have never used a truss rod but since all the necks are pretty husky I haven’t seen a need to do so.
This is a solid body neck through guitar that I built for playing slide although the action is low enough that it can be fretted. The body and fretboard are poplar, the neck is red oak and a hefty 2 3/32” wide all the way down. As with my F hole flat top 4 string guitar the tailpiece is aluminum homemade. The bridge is a piece of ebony on which is mounted a zinc combo screw as is the nut without the ebony of course. The fret markers are burned onto the fretboard. One EMG SELECT humbucker.