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An oak burl bowl
(i.imgur.com)
Oak burl bow - 6 inches by 3 inches (15 cm.x7.5 cm). Someone bought this at a show the first day it was available.
Is a Burl harder to turn than normal wood?
Burl can break apart more easily because bark inclusions are often a problem. So that makes it more difficult sometimes. The wood is not really any harder or softer than other wood.