waned

A waned board or timber is one where the corners or edges are rounded or bevelled away, typically because bark and the outer wood have been lost or never squared off during milling. This isn't defect grading in the modern sense; it's a straightforward physical condition. The rounded corner, called a wane, leaves an arc of missing wood where a sharp corner should be. On rough-sawn stock, especially from smaller mills or portable sawmill operations, you'll see this constantly. The wane may expose bark, sapwood, or simply the natural curve of the log's perimeter.

Wanes vary widely in size and position. A shallow wane might affect only 1/4 inch along a 6-inch edge. A severe wane can consume 2 inches or more of corner on a large timber. They occur because the saw operator followed the log's natural contour rather than cutting square, or because the log itself was too small or too curved to yield a fully squared piece. On timbers cut from the outer portions of a log, wanes are nearly inevitable. In dimension lumber grading, wanes are tolerated within strict limits: a wane occupying no more than 1/8 of the board's width and 1/3 of its length may be acceptable, depending on grade and species.

For finish carpentry, trim, or cabinetwork, a waned edge is a problem. The bark and exposed grain are weak, prone to splintering, and look rough unless heavily sanded and sealed. For framing, blocking, or rough structural work, small wanes are usually ignored. Large timbers used in post-and-beam construction often arrive waned; the wane gets hidden by joinery or simply left exposed as part of the rustic finish. In engineered wood products, wanes are typically milled out entirely, which is why dimensional softwood lumber is sometimes more predictable than timbers.

The word itself comes from Old Norse and relates to the waning or shrinking away of the wood's square profile. It appears in timber grading standards across North America and Europe, embedded in species-specific rules published by lumber associations. Understanding whether your stock is waned and to what degree affects both your milling strategy and your choice of the timber for a given task.