Grade B veneer shall be solid and free from open defects and broken grain, except as permitted. Minor sanding and patching defects, including sander skips, shall not exceed 5% of panel area. Synthetic fillers shall not be used to fill small splits or openings up to 1.6mm (1/16 inch) wide if not exceeding (2 inches) in length small chipped areas or openings not more than (1/8 inch) wide by (¼ inch). Knots shall not exceed (1 inch) measured across the grain and shall be both sound and tight. Where pitch streaks occur, they shall average not more than (1 inch) in width. Discolorations to any degree shall be permitted. Splits shall not be wider than (1/32 inch). Vertical borer holes shall not exceed 1.6mm (1/16 inch) across (1 inch) in length and to 12 in number. Repairs shall be of wood or synthetic patching material and neatly made. Wood veneer repairs shall be die cut. Wood panel repairs shall be “router” or “sled” type. Wood repair shall not exceed (3 inches) in width where occurring in multiple repairs, or (4 inches) in width where occurring singly. Synthetic veneer repairs shall not exceed 100mm (4 inches) in width.
Grade C veneer Sanding defects shall not impair the strength of serviceability of the panel. Knots shall be tight and not more than (1½ inches) across the grain. Discolorations to any degree shall be permitted. Knotholes shall not exceed (1 inch) measured across the grain except that an occasional knot hole more than (1 inch) but not more than (1½ inches) measured across the grain, occurring in any section (12 inches) along the grain shall be permitted, provided the aggregate width of all knots and knotholes occurring wholly within the section does not exceed (½ inch) in width by ½ panel length of (3/8 inch) in width by any panel length provided separation at one ends does not end does not exceed (1/16 inch) where splits runs full panel length however the maximum width within (8 inches) of the panel (open end of split) shall not exceed the maximum width of knotholes permitted within the grade. Splits on panel faces and faces and backs shall not exceed (¼ inch) where located within (1 inch) of parallel panel edge. Void due to missing wood on panel faces and backs not otherwise specified above shall not exceed the maximum width of knotholes permitted in the grade and the length of such voids shall not exceed (6 inches). Wane not exceeding the size of permitted open defeats shall be allowed, providing that where wane occurs at edges of veneer sheets, panel ply separation due to wane shall not exceed limit equivalent to that permitted for short and narrow inner piles. Repairs shall be wood be wood or synthetic patching material neatly made. Wood veneer repairs shall be die cut. Wood panel repairs shall be “router” or “sled” type. Wood repairs shall not exceed (3 inches) in width where occurring in multiple repairs, or (4 inches) in width where occurring singly. Synthetic veneer repairs shall not exceed (4 inches) in width. Synthetic panel repairs shall not exceed (2¼ inches) in width. Shims shall be permitted without limit. Knotholes, worms and borer holes, and other open defeats not larger than (¼ inch) and (½ inch) sound and tight knots up to (1½ inches) measured across the grain splits up to (1/8 inch) wide broken grain pitch pockets, if solid and tight, plugs, patches and shims shall be permitted. Synthetic repairs in veneers shall be exceed (2¼ inches) in width. Where grades have a C plugged face veneer are identified as fully sanded defects shall be the same as admitted under B grade. Sander skips to any degree shall be admissible in touch sanded C plugged veneer.
Grade A veneer shall be firm; smoothly cut; and free of knots, pitch pockets, open splits, and then other open defects and well joined when of more than one piece. Synthetic fillers shall only be used to fill small cracks or checks not more than (1/32 inch) wide, small splits or openings up to (1/16 inch) wide, if not exceeding (2 inches) in length; small chipped areas or openings not more than (1/8 inch) wide by (¼ inch) long. Where pitch streaks occur, each small average not more than (3/8 inch) width and shall blend with the color of the wood. Sapwood and discoloration’s to any degree shall be permitted. Repairs shall be of wood or synthetic patching material, neatly made, parallel to grain and limited to a total of 18 in a number, excluding shims. Patches, when wood, shall be “boat,” “router,” or “sled” type. The radius of ends of boat patches shall not exceed (1/8 inch) and a shall not be more than two patches, neither of which shall exceed (7 inches) in length if either is wider than (1 inch), except that one multiple repair consisting of three die-cut veneer patches shall be permitted. Synthetic repairs shall not exceed (¼ inch) in width. Shims shall not be used over around patches or as multiple repairs.
