Category: Glossary of Terms -S

A lumber defect that is a lengthwise separation of wood; along the growth rings.

A basic, cutting process that uses a blade set with a series of teeth on its edge to cut a narrow opening in a work piece. Sawing may be used to produce slots or grooves or to separate the work piece into two pieces.

Surfaced two faces and straight line ripped one edge

Surfaced two sides, one edge

Surfaced one face

Ability to resist internal slipping of one part upon another along the grain. Values presented are average strength in radial and tangential shear planes.

A variation from the natural colour of the wood or a discoloration that may be caused by micro-organisms, metal or chemicals. The term also refers to materials used to impart colour to the wood.

Separation of the fibres in a piece of wood from face to face (other term: end-split).

The relative weight of a substance compared with that of an equal volume of water. S.G. values given are based on wood volume at 12% MC and oven dry weight.

Surface measure