Nice work there. I am not familiar with the methods of making the plugs, but the cnc work looks nice. I am envious of that laser there. I would be milling or routing for hours.
When I carve my smaller blades, I calculate the profiles incrementally out, divide the top and bottom surfaces, and adjust for the tool offsets based upon the direction of travel, a little bit different carving from one piece of wood, but your work looks familiar to me. Rich