I can't believe I have finished copper plating the hull already. It only took 15 hours, start to finish.   I made the stamps by pounding tiny brass pins directly into the end grain of a block of 3/4 inch cherry. The plans call for 11/16 inch, but 3/4 is so much easier. I clamped a metric ruler to the block, and spaced the pins every 2 mm. I rough clipped the pins with the wire clippers mentioned above, flooded the end grain with thin CA, sanded the pins to the same length with my disk sander,