I've seen many, many examples of such patterns in burl wood. While burl is a tree deformity, it can come in some beautiful patterns that makes it valuable to wood workers.

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Getting Fire From A Tree Without Burning The Wood. June 4, 2019 3:26 PM ET. ... "We have the opportunity to see these patterns that no one has seen before," Vargas says.

With CNC machines, generally the more axes the better. Three-axis machines with a vertical quill over a rectangular workspace are de rigueur, and adding an axis or two can really step up the flexib… ...