Information about Wood Characteristics: Lumber Defects.

Wane
Wane
Cracks
Cracks
Blue Stain
Blue Stain
Perforations
Perforations
Pith
Pith
Spot
Spot
Knots
Knots
Resin Pocket
Resin Pocket
Bad Planing (Hit & Miss)
Bad Planing (Hit & Miss)
Bird Eyes
Bird Eyes