Tree factory

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And a lesson from nautical history:

To the extent possible natural bends in wood were used for "knees" and angle-like ship's timbers. The preference in English shipyards for oak and the preference for natural strength over that of "fasteded" timbers led to this usage. Oaks from the areas of Northern Europe were fine for the development of long straight planking, but the gnarled English "Hedgerow" Oak was the best for the natural curved timbers used to strengthen the ship internally. Trees were even deliberately bent in certain ways so as to " grow" a needed set of curved timbers. These curved timbers were known as "compass" timbers.