Just got the PCBs from PCBWay today!! They really look awesome. I forgot to increase the pullback for the power polygons from the board edge so it's was only 0.2 mm. But they did a very precise job at cutting the edge, no copper is exposed by the cut. The board size perfectly matches the Raspberry Pi form factor. No error on the mechanical side of things. The adapter will look very professional in those RPI case :) .