As I understand it, you cut the reedplate from both sides simultaneously, instead of punching it through from one side (as it is traditionally done) to eliminate that reedslot sloppiness. Seydel came up with that around 2007.Cutting from both sides isn't necessary, is expensive, and the 2 dies won't line up when getting into the 'thousandths' category. The easier solution, and one that can be one at home is MY method.
Dave ______________________ www.elkriverharmonicas.com