I remember watching the Woodright’s Shop on PBS as a kid. This is Episode 1, Season 12, “Bentwood Boxes of the Northwest Coast”. I came across this gem again while searching for carving knives online. Kestrel Tools has created a variety of knives that are sharp on both sides. Very different from most that create a crooked knife. Normally it is either a left or right handed, push or pull type of thing. They also make a variety of adze that work well for hogging away large chucks of wood.
I may buy one piece at a time, or save up for their Carver’s Kit (4 knives and a gutter adze). Anyways, check them out if you get the chance.