I had planned to write this whole post about wood movement and using tabletop anchors in finalizing the bathroom vanity project, but there is nothing I could say that Paul Sellers hasn’t said already (and better).
So, if you don’t know about wooden tabletop connectors, stop what you’re doing and go watch this Paul Sellers video. After that, if you are so inclined, enjoy this picture of the undercarriage of the vanity. Tabletop connectors not only hold the top on the vanity, but also anchor the entire assembly to the wall stud.
Don’t forget to use brass fasteners in white oak. Steel and white oak do not play nicely together.