how to make a dugout boat
The Pirogue maker
This answered a question that has tasked me ever since I read about dugout canoes: how do they know how much to take off from the inside and outside to get the hull thickness they want? What they did in this film is drill a hole through the boat to judge the thickness as they were planing it down. Once they got it right, they sealed the hole with a plug.
Now why didn't I think of that?