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Hogan Hardwoods Plywood Grades
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Summary of Characteristics and Allowable Defects for Plywood Cores |
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Grade Description |
Grade Designation |
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J |
K |
L |
M |
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Thickness of Crossbands Adjacent
to Faces |
Any thickness |
Thicker than
1/10 in. |
1/10 in. or thinner |
Any thickness |
Any thickness |
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Knotholes and Other Round, Elliptical, or Similar Shape
Openings (Max. Diameter) |
None |
3/8 in. |
3/4 in. |
1 in. |
2-1/2 in. |
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Splits, Gaps, and Other Elongated End or Edge Openings - Each
Opening is Visible on Only One End or Edge of Panel (Max.
Width) |
1/8 in. |
1/4 in. |
1/2 in. |
1 in. |
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SHOP GRADE
- Shop Grade veneer will yield an 85% plus useable panel.
Panels down graded to Shop Grade are because of "sand throughs"
in face veneers or veneers not covering the full length or
width of the panel. De-lamination in not more than 15%
of the panel is allowed in the Shop Grade. |
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IMPORT PLYWOOD FACE VENEER GRADES |
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FD
GRADE - Free-Of-Defect Grade. Very similar to an ANSI
"A" Grade. |
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BB GRADE - Allows slight
mineral stain, small pin knots and is similar to an ANSI "B" Grade
and "C" Grade in combination. |
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CC
GRADE - Allows mineral stain, more burls and pin knots than
"BB" Grade and filled/repaired veneer splits. Similar to the
ANSI "D" Grade. |
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NOTE:
Generally the "BB" and "CC" Grades are combined and sold as
BB/CC. |
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OVERLAY AND BETTER GRADE - All repairs must be filled and
sanded. This is a sound grade. |
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INDUSTRIAL GRADE - This grade allows open defects such as
splits and gaps at veneer joint. |
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RUSSIAN BIRCH VENEER GRADES |
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B/BB
Grade: B face is one piece and seldom is patched. |
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BB/BB Grade: Uniform light sanded both faces.
Allows patched face and backs |
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BB/CP
Grade: BB face is the same as above. CP back
allows small open defects |
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NOTE:
"Patched" means face and back may have oval or football shaped
wood repairs. |
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