eli5, what is a knot in a plank of wood (or tree) and why are they so much harder to cut through?

298 views
0

eli5, what is a knot in a plank of wood (or tree) and why are they so much harder to cut through?

In: Earth Science

IIRC a knot is the base of a branch or bough splitting off from the tree itself. It’s harder than the surroundong wood because the grain is perpendicular to the grain of the surrounding wood.

You know how trees grow branches? Well the knot is where the tree connects to a branch. Branches get fed from the stem and over time become hard and form dark rings, known as knots!