knoesten

Knoesten are knots in wood, irregularities that occur when a branch grows from the trunk or when the base of a former branch remains embedded in the trunk after the branch dies. In timber, knots interrupt the normal grain and can appear as circular or oval darker or lighter areas, often with a surrounding spiral grain. The size, shape and whether a knot is sound or loose influence the wood’s workability, strength and appearance.

Knot types include tight (sound) knots, where the knot is tightly bound to the surrounding wood, and loose knots, where the branch has rotted or fallen out, leaving a hole or hollow. Live knots may still be filled with resin. Softwoods tend to show more visible knots because branches form more frequently, while hardwoods can have smaller or less conspicuous knots.

In forestry and timber production, knots are a key factor in grading lumber. They can reduce bending and shear strength, complicate planing and machining, and affect gluing and finishing. At the same time, knots add visual character and are valued in rustic or traditional furniture and flooring. Woodworkers may stabilize or fill knots with resin, wood filler, or epoxy, and sometimes cut around knots to maintain structural integrity or achieve a desired look.

Etymology: The Dutch term knoest derives from older Germanic roots meaning a knob or lump, reflecting the knobby appearance of the feature. In everyday language, knoesten are commonly discussed in the context of timber quality and decorative wood.