27f1c7fc___Common_Wood___Lumber_Defects__0
[2] The presence of bark or absence of wood on corners or along the length of a piece of lumber. Wane in the form of bark is more commonly associated with rough milled lumber. In the case of construction lumber (i.e., pine 2'x4's), it can be bark or missing wood. [0] 
Wane
B o w
C h e c k
C r o o k
C u p
S h a k e
S p l i t
T w i s t
W a n e
M a c h i n e B u r n
Sam Rogers' Common Wood & Lumber Defects
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