Carpentry Glossary - O

Glossary Index

Ogee: a molding with an ogee-shaped profile, consisting (going from low to high) of a concave arc flowing into a convex arc, with vertical ends; an alternative name for such a molding is cyma reversa; talon is also used.

Oilcloth: heavy cotton or linen cloth with a linseed oil coating, semi-water-proof.

Oilstone: a type of fine grade blade shapening and honing stone One of the natural minerals commonly used in oilstones is Novaculite.

On Center: indicates the spacing of framing members; the measurement from the center of one member to the center of the nearest member.

Open Grained Wood: wood having large poers, for example ash, oak, chestnut or walnut.

Oriel: a projecting bay window carried on corbels, brackets or a cantilever.

Oriented Strand Board
: a formed wood product panel, made by layering strands of wood in specific orientations. In appearance it may have a rough and variegated surface with the individual strips lying unevenly across each other.

Outrigger
: the part of a rafter extending beyound the wall line.

Oven-dry Wood: wood dired in a ventilated oven until it is almost completely moisture free.