Tonight I had a burst of energy and enlarged the last doghole from my bench for the planing stop.
Drilling a couple of holes with brace and bit, then chopping with my now favorite Nooitgedagt chisels. For this kind of work they are perfect, sturdy and long.
Checking often with a square, I made the fit for the block of oak very tight. Roubo wants the piece of oak to be 1 foot long, I wouldn't know why, mine happens to be a little shorter. After drilling the hole and enlargening it to a tapered fit, I smashed the stop into the top of the block. I added a bit of relief for the teeth in the workbench top so the teeth can sink below the surface when not in use.
And that's how it works. I will have to practice to find the best way to use it.