DENDROLOGY

Detailed explanation-1: -In rift sawn lumber the annual rings are typically between 30-60 degrees, with 45 degrees being optimum. Manufactured by milling perpendicular to the log’s growth rings producing a linear grain pattern with no flecking. This method produces the most waste, increasing the cost of this lumber.

Detailed explanation-2: -Most mills sell plain sawn (aka flat sawn) lumber because it’s the simplest, most cost-efficient way to mill a log into planks. Cutting parallel through the log, plain sawn wood planks are wider and can be milled effortlessly with minimal waste.