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Architectural
Panels
Central
places a special emphasis on specialty veneers and distinct
panelling products. Central's complete inventory of
architectural grade plywood includes Red and White Oak, Walnut,
Pecan, and Cherry. We also stock such hard to find items
as:
- Quarter-Sliced African Mahogany
- Rift-Sliced Red and White Oak, sequence
matched and numbered
- Quarter-Sliced White Oak
- American Black Walnut, sequence matched
and numbered
In addition, Central is able to locate
such exotic species as quartered and figured Anigre, quartered
Makore, Birds-Eye Maple, Camphorwood Burl, and Sapele, just
to name a few. We can furnish stock panels, cut-to-size
components, and blueprint-matched panels to match architectural
specifications. Fire retardant panels are also available.
|
 Oak
makes up 70% or more of the lumber produced in the
United States. Because of its popularity, Central
has a large inventory of Oak lumber, plywood, veneer,
or millwork, and all of our Oak is available in Plain,
Quartered, or Rift. |
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| The
individual leaves of veneer in a sliced flitch increase
or decrease as the slicing progresses. Thus, if a number
of panels are manufactured from a particular flitch, the
number or veneer leaves per panel face will change as the
flitch is utilized. The manner in which the leaves are "laid
up" within the panel requires book-matching, and are
classified as follows:
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Lot or Running
Match
Each face is made from as many veneer pieces
as necessary. If part of a veneer sheet is left over,
it is used at the start of the next panel face. Maximum
yield from the flitch is thus achieved and is most commonly
used in producing "warehouse flitch" matched
panels sets. Some of the grain might be eliminated due
to trimming on flitch and sequence match, but is carefully
avoided in blueprint-matched panels. |
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| Balance Match
Panel faces are made from an odd or
even number of equal width veneer pieces. If the panel
run is large, the number of veneer pieces per equal
width panel may eventually increase or decrease as
the individual veneer pieces vary in width within
the total flitch. Grain continuity may change on adjacent
panels as a result of this, but the panels are generally
more symmetrical than are running matched panels.
This face matching method may be used in sequence-matched
sets and is commonly used in blueprint-matched panels. |
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| Center Match
Panel faces are made with an even number
of equal-width veneer pieces, which results in the
same grain and figure occurring on each side of the
vertical centerline of the panel. This method of matching
produces the most symmetrical pattern and is also
most expensive. |
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| Vertical End Matching
This method is used when the panel height
desired exceeds the veneer length. The remedy of this
problem is achieved by progressively book matching
lengthwise as well as horizontally, thus achieving
a uniform grain progression in both directions. Doors
and transforms are matched in this fashion. |
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| Sequence-Matched
Panels
These panels are pre-manufactured and numbered
in standard 4x8 or 4x10 sizes. They may be the products
of a flitch or part thereof with the number of panels
usually varying from six to 12. If more than one flitch
is used, grain and color may not be similar. Odd-sized
panels will be cut during installation, which may
interrupt continuity of grain as well. The best utilization
of these panels is achieved by using them in their
near full width necessary adjustments being made at
wall ends or corners. |
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| Blueprint-Matched
Panels and Components
All panels, doors, and other veneered
components are made to the exact sizes required, and
in exact veneer sequence and color. Flitches are selected
which will yield enough veneer to complete a prescribed
room or area. If more than one flitch is required,
flitch transition should be accomplished at the least
noticeable predetermined location. |
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| The
manner in which veneers are cut is an important factor in
producing the various visual effects obtained. Two woods
of the same species, but with their veneer cut differently,
will have entirely different visual character even though
color values are similar. In plywood manufacture, there
are five principal methods of cutting veneer. The veneer
slicer and veneer lathe are the primary pieces of equipment
employed. The five methods are:
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Rotary Cut
The log is mounted centrally in the lathe and
turned against a razor sharp blade, like unwinding a
roll of paper. Since the cut follows the log's
annular growth rings, a bold grain figure is produced. Rotary
cut veneer is exceptionally wide, and matching at veneer
joints is relatively difficult. Almost all softwood
plywood is cut in this manner. Lengths in all hardwoods
are limited to 10 feet. |
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| Flat or Plain Slicing
The half log, of flitch, is mounted
with the heart side flat against the guide plate of
the slicer and the slicing is done parallel to a line
through the center of the log. This produces
a figure to that of plain sawn lumber. |
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| Quarter Slicing
The quarter log, or flitch, is mounted on
the guide plate so that the growth rings of the log
strike the knife at approximately right angles. This
produces a series of stripes, straight in some woods,
varied in others. |
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| Half-Round Slicing
This method of slicing is a variation of
rotary cutting in which segments of the log are mounted
off center in the lathe. This results in a cut slightly
across the annular growth rings and visually shows
modified characteristics of both rotary and plain-sliced
veneers. This method of cutting is often used with
Red Oak. |
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| Rift Cut
Rift-cut veneer is produced in the various
species of Oak. Oak has medullary ray cells, which
radiate from the center of the log like the spokes
of a wheel. The rift, or comb grain effect, is obtained
by slicing slightly across the medullary rays. This
accentuates the vertical grain and minimizes the flake. |
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| The
use of premium grade permits the pre-selection of
veneers from numerous domestic and exotic species.
This selection is usually made from the veneer flitch
samples that are taken from three or four representative
segments of the total flitch. For example, a package
of veneers is sliced from a single log or segment
and kept in the same order or position held in the
log prior to its slicing.
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Book
Matching
Every other piece of veneer used in
laying up an individual panel is turned over
much like the pages of a book. Thus, the meeting
edges produce a matching joint with maximum
continuity of grain. This can be used with either
plain or quarter-sliced veneers. |
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| Slip Matching
Veneer sheets are joined side by side,
rather than turned as in book matching, resulting
in a repetition of the grain figure but with
non-matching joints. The result is a panel which
displays maximum color uniformity and is commonly
used with quartered and rift-sliced veneers. |
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| Random Matching
Veneer sheets are deliberately mismatched
by random selection of the pieces from one or
more flitches. This produces a casual or "board-like"
effect. |
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| Types
Of Plywood |
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| Veneer
Core
|
This
type of construction is composed of an odd number
of veneer plies. The middle ply is called
the "center" and the plies on either
side of the center are called "cross bandings." Outer
plies are called "faces" and "backs."
Panel thickness varies from 1/8 inches thick
to 3/4 inches or more: 1/4 inch or less panels
are normally 3-ply; while thicker panels are
5 to 11-ply or more. |
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| Lumber
Core
|
This type
of construction is usually 5-ply consisting
of a face and back veneer, two crossbands, and
a core composed of lumber strips that are edge
glued to form a solid slab. |
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| Particle
Board/Fibreboard Core
|
The face
and back veneers are applied directly to either
a core of particleboard or medium density fibreboard. |
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| Composite
Core
|
A veneer
core is combined with a composite crossband
onto which face and back veneers are directly
applied. The combination provides the strength
and screw holding characteristics of veneer
core with the smooth surface of a fibreboard
core. |
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| Core/Substrate |
| VC |
Veneer Core |
LC |
Lumber Core |
| MDFC |
Medium Density Fibreboard
Core |
COMP C |
Composite Core |
| Veneer
Cut |
| RC |
Rotary Cut |
Rift |
Rift Cut |
| PS |
Plain Sliced |
Qtrd |
Quarter Sliced |
| Miscellaneous |
| SW |
Select White |
NS |
No Sap |
| WPF |
Whole Piece Face |
SM&N |
Sequence Matched and
Numbered |
| Face
Grades |
| Grade |
Color |
Natural Color |
| AA |
Allows for
slight color streaks, slight color variations,
and no color contrasts at component joints. Minimum
width of veneer components is 6" for
plain slice and rotary cut, 3" for
rift and quarter sawn. |
Very strict
limitations on size and frequency of pin
knots and conspicuous burls. No mineral
streaks, bark pockets, or vine marks allowed,
and slight allowances for worm tracks. |
| A |
Same allowances
as AA grade with one significant exception.
Veneer components must only be 5" for
plain sliced or rotary cut, while quarter
and rift sawn components are the same as
AA grade. |
Grade A
panels are a little less stringent on the
number and size of conspicuous pin knots
and burls on the face than AA panels. Also,
A panels allow for slight mineral streaking,
as well as slight vine marks. |
| B |
Color
streaks are allowed, as are color variations
on the face. Also, the required nominal
widths of the veneer components are less:
4" for rotary cut, and 3" for
plain sliced, quarter sawn, and rift cut
panels. |
A greater
frequency or conspicuous burls and pin knots
is allowed, as is a larger size of the burls
and knots. Repaired knotholes are also acceptable
(to a certain degree) as are bark pockets
and worm tracks. |
| C |
This grade
allows color streaks, spots, and variations
at component joints. There is no minimum
width for the veneer components. |
No limitations
on the number of small burls, pin knots
or conspicuous burl sizes. This grade is
less discriminating about the size of the
repaired knots than a B grade. Also allowable
under a C grade are mineral streaks, bark
pockets, worm tracks, and vine marks to
a greater extent than B grade. |
| D |
This grade
allows color streaks, spots, and variations
at component joints. There is no minimum
width for the veneer components. |
No limitations
on the number of small burls, pin knots
or conspicuous burl sizes. Larger size of
repaired knots allowed (up to 3/4")
and are allowed at a greater frequency than
any of the aforementioned grades. Bark pockets
up to 2" allowed. |
| Please note that
exact grade specifications are available
upon request from your local Central Hardwoods,
Inc. representative. |
| Back
Grades |
| Grade |
Allowances |
| 1 |
Sapwood, discoloration
& stain, mineral streaks, sound tight
knots and burls, no knotholes, repaired
bark pockets, filled wormholes. |
| 2 |
Sapwood, discoloration
& stain, mineral streaks, sound tight
knots and burls, repaired knotholes (1/2"),
repaired bark pockets, filled wormholes,
limited number of repaired splits and joints. |
| 3 |
Larger knots allowed,
unlimited number of knots up to 1/2".
wormholes, bark pockets, splits and open
joints. |
| 4 |
Only limits that apply
are 4" knotholes, 1" limit on
splits and joints. All aforementioned
flaws unlimited on 4 back. |
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| Ash,
Domestic |
| Thick |
Size |
Grade |
Core |
Veneer
Cut |
Misc. |
| 5/8" |
4x8 |
B-2 |
MDF |
RC |
WPF |
| 3/4" |
4x8 |
Shop |
VC |
RC |
WPF |
| 3/4" |
4x8 |
A-1 |
VC |
RC |
WPF |
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Ash, Import |
| Thick |
Size |
Grade |
Core |
Veneer
Cut |
Misc. |
| 1/8" |
4x8 |
A-3 |
VC |
PS |
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| 1/4" |
4x8 |
A-2 |
VC |
PS |
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| 1/4" |
4x8 |
A-3 |
VC |
PS |
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| 3/4" |
4x8 |
A-2 |
LC |
PS |
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Birch, Import |
| Thick |
Size |
Grade |
Core |
Veneer Cut |
Misc. |
| 1/4" |
4x8 |
A-2 |
VC |
PS |
|
| 1/4" |
4x8 |
A-3 |
VC |
PS |
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| 3/4" |
4x8 |
A-2 |
LC |
PS |
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Agathis,
Import |
| Thick |
Size |
Grade |
Core |
Veneer Cut |
Misc. |
| 1/4" |
4x8 |
A-3 |
VC |
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| 1/2" |
4x8 |
A-3 |
VC |
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| 3/4" |
4x8 |
A-3 |
LC |
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Birch, Domestic |
| Thick |
Size |
Grade |
Core |
Veneer Cut |
Misc. |
| 1/4" |
4x8 |
A-4 |
MDF |
RC |
WPF |
| 1/2" |
4x8 |
C-2 |
VC |
RC |
WPF |
| 5/8" |
4x8 |
B-2 |
MDF |
RC |
WPF |
| 3/4" |
4x8 |
A-1 |
VC |
RC |
SW,WPF |
| 3/4" |
4x8 |
A-2 |
VC |
RC |
WPF |
| 3/4" |
4x8 |
B-2 |
MDF |
RC |
WPF |
| 3/4" |
4x8 |
C-3 |
VC |
RC |
WPF |
| 3/4" |
4x8 |
Cascade |
VC |
RC |
WPF |
| 3/4" |
4x8 |
Shop |
VC |
RC |
WPF |
| 3/4" |
4x10 |
C-2 |
VC |
RC |
WPF |
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Birch, Russian |
| Thick |
Size |
Grade |
Core |
Veneer Cut |
Misc. |
| 1/2" |
58x60 |
BB/BB |
9-Ply |
RC |
SW |
| 1/2" |
60x60 |
BB/BB |
9-Ply |
RC |
SW |
| 3/4" |
58x60 |
BB/BB |
13-Ply |
RC |
SW |
| 3/4" |
4x8 |
BB/BB |
13-Ply |
RC |
SW |
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Pecan, Clear |
| Thick |
Size |
Grade |
Core |
Veneer Cut |
Misc. |
| 1/4" |
4x8 |
A-3 |
MDF |
PS |
|
| 3/4" |
4x8 |
A-2 |
VC |
PS |
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Cherry,
No Sap |
| Thick |
Size |
Grade |
Core |
Veneer Cut |
Misc. |
| 1/4" |
4x8 |
AA-3 |
MDF |
PS |
SM&N |
| 3/4" |
4x8 |
AA-1 |
VC |
PS |
SM&N |
| 3/4" |
4x8 |
AA-1 |
MDF |
PS |
SM&N |
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Lauan, Mearanti |
| Thick |
Size |
Grade |
Core |
Veneer Cut |
Misc. |
| 1/8" |
4x8 |
A-3 |
MDF |
RC |
|
| 1/4" |
4x8 |
A-3 |
VC |
RC |
|
| 1/4" |
8x4 |
|
3-ply |
RC |
Bending |
| 3/8" |
4x8 |
|
3-ply |
RC |
Bending |
| 3/8" |
8x4 |
|
3-ply |
RC |
Bending |
| 1/2" |
4x8 |
A-2 |
VC |
RC |
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| 3/4" |
4x8 |
A-2 |
LC |
RC |
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Maple, Domestic |
| Thick |
Size |
Grade |
Core |
Veneer Cut |
Misc. |
| 1/4" |
4x8 |
A-2 |
MDF |
RC |
WPF |
| 1/4" |
4x8 |
B-4 |
VC |
RC |
WPF |
| 1/2" |
4x8 |
C-2 |
VC |
RC |
WPF |
| 3/4" |
4x8 |
A-1 |
MDF |
PS |
SW |
| 3/4" |
4x8 |
A-1 |
VC |
RC |
SW,WPF |
| 3/4" |
4x8 |
B-2 |
MDF |
RC |
WPF |
| 3/4" |
4x8 |
B-2 |
VC |
RC |
WPF |
| 3/4" |
4x8 |
B-2 |
MDF |
RC |
WPF |
| 3/4" |
4x8 |
C-2 |
VC |
RC |
WPF |
| 3/4" |
4x8 |
C-3 |
VC |
RC |
WPF |
| 3/4" |
4x8 |
Cascade |
VC |
RC |
WPF |
| 3/4" |
4x8 |
Shop |
VC |
RC |
WPF |
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Mahogany,
S. American |
| Thick |
Size |
Grade |
Core |
Veneer Cut |
Misc. |
| 1/4" |
4x8 |
A-3 |
MDF |
PS |
SM&N |
| 1/4" |
4x10 |
A-4 |
MDF |
PS |
SM&N |
| 1/2" |
4x8 |
A-2 |
VC |
PS |
SM&N |
| 3/4" |
4x8 |
A-1 |
VC |
PS |
SM&N |
| 3/4" |
4x8 |
A-1 |
MDF |
PS |
SM&N |
| 3/4" |
4x8 |
A-1 |
MDF |
PS |
SM&N |
| 3/4" |
4x10 |
A-1 |
MDF |
PS |
SM&N |
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Red Oak,
Import |
| Thick |
Size |
Grade |
Core |
Veneer Cut |
Misc. |
| 1/4" |
4x8 |
A-2 |
VC |
PS |
|
| 1/4" |
4x8 |
A-3 |
VC |
PS |
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Red Oak,
Domestic |
| Thick |
Size |
Grade |
Core |
Veneer Cut |
Misc. |
| 1/4" |
4x8 |
A-4 |
MDF |
PS |
|
| 1/4" |
4x8 |
A-1 |
MDF |
Rift |
SM&N |
| 1/4" |
4x10 |
A-3 |
MDF |
PS |
|
| 1/2" |
4x8 |
A-2 |
VC |
PS |
|
| 3/4" |
4x8 |
A-1 |
VC |
PS |
|
| 3/4" |
4x8 |
A-2 |
VC |
PS |
|
| 3/4" |
4x8 |
A-1 |
PBC |
PS |
|
| 3/4" |
4x8 |
A-1 |
VC |
RC |
WPF |
| 3/4" |
4x8 |
A-2 |
MDF |
PS |
|
| 3/4" |
4x8 |
A-1 |
VC |
Rift |
SM&N |
| 3/4" |
4x8 |
A-1 |
MDF |
Rift |
SM&N |
| 3/4" |
4x8 |
A-2 |
LC |
PS |
|
| 3/4" |
4x8 |
B-2 |
VC |
RC |
WPF |
| 3/4" |
4x8 |
B-2 |
MDF |
PS |
|
| 3/4" |
4x8 |
B-2 |
MDF |
RC |
WPF |
| 3/4" |
4x8 |
Shop |
VC |
RC |
WPF |
| 3/4" |
4x10 |
A-1 |
VC |
PS |
|
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White Oak,
Import |
| Thick |
Size |
Grade |
Core |
Veneer Cut |
Misc. |
| 1/4" |
4x8 |
A-4 |
VC |
PS |
|
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White Oak,
Domestic |
| Thick |
Size |
Grade |
Core |
Veneer Cut |
Misc. |
| 1/4" |
4x8 |
A-3 |
MDF |
PS |
|
| 1/4" |
4x8 |
A-3 |
MDF |
Qtrd |
|
| 1/4" |
4x8 |
A-4 |
MDF |
Rift |
SM&N |
| 3/4" |
4x8 |
A-1 |
VC |
PS |
|
| 3/4" |
4x8 |
A-2 |
MDF |
PS |
|
| 3/4" |
4x8 |
AA-1 |
MDF |
Qtrd |
|
| 3/4" |
4x8 |
AA-1 |
VC |
Rift |
SM&N |
| 3/4" |
4x8 |
AA-1 |
MDF |
Rift |
SM&N |
|
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Walnut,
Import |
| Thick |
Size |
Grade |
Core |
Veneer Cut |
Misc. |
| 1/4" |
4x8 |
A-4 |
MDF |
PS |
|
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|
Walnut,
Domestic |
| Thick |
Size |
Grade |
Core |
Veneer Cut |
Misc. |
| 1/4" |
4x8 |
A-4 |
MDF |
PS |
SM&N |
| 3/4" |
4x8 |
A-1 |
VC |
PS |
SM&N |
| 3/4" |
4x8 |
A-1 |
MDF |
PS |
SM&N |
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