|
| Bark |
: |
Areas of fiber from
outside a tree. |
 |
| Bevel |
: |
Machine angle other than a right
angle. That is, a 3-degree bevel which is equivalent
to a 1/8-in. drop in a 2-in. span. |
| Beveled edge |
: |
Edge of a door which forms an
angle of less than 90 degrees with the wide face of
the door, such as a 3-degree beveled edge. |
| Blister |
: |
Spot or area where veneer does
not adhere. |
| Book size |
: |
The height and width of a door
before pre fitting. |
| Brashness |
: |
Condition of wood characterized
by low resistance to shock and by abrupt failure across
the grain without splintering. |
| Burl |
: |
Swirl or twist in grain of wood,
which usually occurs near a knot but does not contain
a knot. |
| Butt joint |
: |
Joint formed by square
edge surfaces (ends, edges, faces) coming together.
|
|
| Chalk |
: |
White or other color
chalk marks used by mills for some form of identification
marking defects for repair. |
| Chatter |
: |
Lines appearing across
the panel at right angles to the grain giving the appearance
of one or more corrugations resulting from bad setting
of sanding equipment. |
| Chicken tracks |
: |
Expression for scars
which give the particular effect of a chicken's footprint.
It is caused by air roots or vines. |
| Clustered |
: |
When a defect described
in the grading rule is sufficient in number and sufficiently
close together to appear to be concentrated in one area.
|
| Composition face panels |
: |
A door face panel
made of a wood derivative. |
| Core |
: |
Innermost layer of
section in flush door construction. Types of construction
include: wood block; particle board; wood block (lined);
hollow; ladder; mesh or cellular. |
| Core (Wood Block) |
: |
Solid core of wood
blocks or strips |
| Core (Particle board) |
: |
Sold core of wood
or other lignocellulose particles bonded together, cured
under heat, and pressed into a rigid panel. |
| Core (Wood Block, Lined) |
: |
Solid core of two
parts: a central wood block core bonded to two core
liners of wood or other lignocellulose materials. |
| Core (Hollow) |
: |
Core assembly of
strips or other units of wood, wood derivative, or insulation
board, with intervening hollow cells or spaces which
support outer faces. |
| Core (Ladder) |
: |
Hollow core composed
of strips of wood, wood derivative, or insulation board
with the strips running either horizontally or vertically
throughout the core area with air cells and/or spaces
between the strips and supporting the door faces. |
| Core (Mesh or Cellular) |
: |
Hollow core composed
of strips of wood, wood derivative, or insulation board,
interlocked and running horizontally, vertically, or
diagonally throughout the core area with air cells and/or
spaces between the strips and supporting the outer faces.
|
| Cross banding |
: |
Veneer placed between
the core and face veneers of plywood face panels of
wood flush doors in which the direction of the grain
in 2-ply construction is at right angles to that of
the face veneer. |
|
|
|
|
Particle
board |
Solid |
Mesh or
Cellular |
Mineral
|
|
|
| Cross bar |
: |
Type of figure or
irregularity of grain resembling a dip in the grain,
running at right angles, or nearly so, to the length
of the veneer. |
| Cross break |
: |
Separation of wood
cells across the grain. |
|
| Dead knots (also open knots) |
: |
Openings where a
portion of the wood substance of the knot has dropped
out, or where cross checks have occurred to present
an opening. |
| Delamination |
: |
Separation of plies
or layers of wood or other materials through failure
at an adhesive joint. |
| Discolorations |
: |
Stains in wood substances.
Common are sap stains and blue stains. |
| Doze |
: |
Form of incipient
decay characterized by a dull and lifeless appearance
of the wood, accompanied by a lack of strength and a
softening of the wood substance. |
|
| Edge band |
: |
Strip along the outside
edges of the two sides and/or top and bottom of a door.
|
|
| Face panels |
: |
Hardwood plywood,
high pressure laminate, hardboard, or composition panels
or combination thereof, whether flat or configured,
which are used for the faces of flush doors. |
| Fill (putty repairs) |
: |
Repair to an open
defect with fast-drying plastic putty. |
| Finger joint |
: |
Series of interlocking
fingers cut on the ends of two pieces of wood which
mesh together and are held by adhesive. |
|
| Gap |
: |
Open splits in the
inner ply or plies, or improperly joined veneer when
joined veneers are used for inner plies. |
| Gum spots |
: |
Well-defined openings
between rings of annual growth, usually containing gum
or pitch. |
|
|
|
|
Interior
Panel Doors |
Side Light
|
Bifold |
|
|
|
| Kiln-dried |
: |
Lumber dried in a
closed chamber in which the removal of moisture is controlled
by artificial heat and usually by relative humidity.
|
| Knife marks |
: |
Very fine lines that
appear across a panel that may look as if they are raised
resulting from some defect. |
| Knot (sound) |
: |
Cross section of
a branch or limb with grain usually running at right
angles to that of the wood in which it occurs. |
| Knot holes |
: |
Voids produced by
knots dropping from the wood in which they were originally
embedded. |
| Knots (pin) |
: |
Sound knots less
than 1/4-in. in diameter. |
|
| Lap |
: |
Condition where veneers
composing plywood are so misplaced that one piece overlaps
the other and does not make a smooth joint. |
| Lock block |
: |
Concealed block same
thickness as a door stile or core which is adjacent
to the inside edge of the stile at the midpoint and
into which a lock is fitted. |
|
| Patches |
: |
Matching wood pieces
carefully inserted and glued into the door face after
defective portions have been removed. |
| Pitch |
: |
Bleeding resin. |
|
| Rails |
: |
Cross or horizontal
pieces of the framework of a wood flush door. |
| Rail (bottom) |
: |
Bottom cross or horizontal
piece of a door. |
| Rail (top) |
: |
Top cross or horizontal
piece of a door. |
|
| Shake |
: |
Separation along
the grain, the greater part of which occurs between
the rings of annual growth. |
| Shims |
: |
A split repaired
in a piece of wood veneer. |
| Show-through |
: |
Irregular surfaces
visible on the face of a wood flush door. |
|
|
|
Entrance
Door |
French Door
|
Insulated
Glass Door
|
|
|
| Standard door |
: |
By industry practice,
a standard door is book size in both width and height.
|
| Stiles |
: |
Upright or vertical
pieces of the framework of a wood flush door. |
|
| Tape |
: |
Strips of gummed
paper used to hold edges of veneer together at the joints
before gluing. |
| Telegraphing |
: |
Visible irregularities
in surface of face of plywood caused by corresponding
irregularities in the under laying plies such as core
laps, voids, or extraneous matter. |
| Types (door styles) |
: |
The selection includes
exterior entrance doors, interior passage doors, French
or casement doors, bi-fold doors, side lights, patio
sliding and swinging doors, thermal insulated-glass
doors, louver do ors, screen doors, and specialty door
products. Several selected types are illustrated here.
|
|
| Vine streaks (marks) |
: |
Scars in wood generally
caused by the stems of vines clinging by their hair-like
roots to the tree trunk. |
|
| Warp |
: |
Any distortion in
the plane of a door itself and not its relationship
to the frame or jamb in which it is to be hung. Warp
includes bow, cup, and twist: |
| Bow |
: |
A flat wise deviation
from a straight line drawn from top to bottom; a curvature
along the width of the door. |
| Cup |
: |
A deviation from
a straight line drawn from side-to-side; a curvature
along the width of a door. |
| Twist |
: |
A deviation in which
one or two corners of a door are out of plane with the
other corners of the door. |
| Wood flush door |
: |
Stressed skin construction
consisting of a core, stiles, and rails, and or/edge
banding, two face panels, almost all of which are wood,
wood derivative. materials, or high pressure decorative
laminate. |
| Worm track or scar |
: |
Groove or resulting
scar tissue in wood caused by worms or other borers.
|
