Choose the right grading
The grading process of timbers can be a complicated topic. In simplistic terms, the grades of timber that display fewer knots and less natural detail tend to be taken from the more central parts of the tree trunk (bole). Although far more natural detail will be visually evident, it is extremely unlikely that a rustic grade will consist of lesser quality timber than those referred to as being prime or select. Therefore the choice of grading is purely an aesthetic one.
AB Grade Select/Nature
Planks are selected to give grain and colour variation. There can be a small amount of light sapwood around the edge of the board. Small sound knots and smaller filled knots also add to the natural effect.
ABC Grade Mixed
Popular in species such as walnut. This grade displays more variation in grain and colour with larger sound & filled knots with more sapwood well distributed. Small filled cracks and dark streaks are also apparent.
CD Grade Rustic
More economical timber selection allows for more grain and colour variation with large sound knots and more filled knots well distributed. Small filled cracks and dark streaks are also apparent.