Re: addendum
William Duffield, on the Cohansey
>There were several different tools, and tool sets used at different times and in different traditions. John Whelan's book, The Wooden Plane, explains many of the alternatives. In the U.S., a simple tool was the Badger Plane . It had a skewed blade, and a nicker and a rabbet on one side for cutting the step. More complicated was the panel raising plane. The fanciest of these had a skewed blade held in a sprung position and a depth stop and fence. The edge was complicated, so that in one pass it could cut the step at the edge of the field (often with the help of a nicker for a smoother cut), leave the tongue untapered, and cut either a flat, simply curved, ogee or a much more complicated slope.