Defects

Wane

It normally belongs to the trunk extreme located near the wood.

It reduces considerably the quality of this material.

Cracks

It refers to the separation of the wood fibers and therefore reduces wood resistance.

This is caused by wood tensions in cutting and transportation, drying or sawing.

Blue stain

The bluish appearance, sometimes called blue stain, and the mold are caused

by the fungus that vigorously grow in cut trees and in serrated wood, and

have a discoloring unpleasant look. Affected wood loose a huge value.

Knothole

These are holes of various sizes and forms, normally caused by

the detachment of a dead knot.

Pith

It's the interior part of the trunk. It can be classified as firm pith,

without material loss, or chambered pith, with material loss.

Spot

Abnormal tissue development that connects the pith with the aciculars - a white,

hardly visible sport,and a clearly visible Brown spot - with material loss.

Knots

It's the area a brunch, presented like a knot or dead knot.

Resin Pocket

Cavities, formed between the rings, full with resin, generally formed in a long shape.

They can produce less resistance or lack of adherence in the rings.

Bad planing

It is the surface of the wood that is not totally extracted when planning the material.

It has smaller dimension, and bad surface quality.

Checks

A common decorative characteristic of hard maple and sometimes of other species.

It is conical, formed in the external annual rings, and has the same shape probably

for many years.