[G] look up term in glossary.
Walnut/Cherry |
Location |
Defects |
Grade N |
Grade R |
Face Veneer |
Live knot [G] |
Not restricted |
Not restricted |
| Dead knot [G] |
3 allowed diameter ≤ 5 mm max 20% of pieces |
3 allowed, diameter ≤10 mm |
| Brown line[G] |
2 allowed, sparse
length ≤ 15 mm; width ≤ 3 mm |
4 allowed,
length ≤ 30 mm; width ≤ 5 mm |
Veins |
Not restricted |
Not restricted |
Colour |
Natural colour |
Natural colour |
| Discolouration [G] |
Not allowed |
Slight and natural |
| Colour Variation [G] |
Slight and natural |
Not restricted |
| Sapwood [G] |
Not allowed |
Not restricted |
| False Heart Wood [G] |
Not allowed |
Not restricted |
| Crack [G] |
Not allowed |
Not allowed |
| Wormholes [G] |
Not allowed |
Not allowed |
| Stain [G] |
Not allowed |
Slight |
Black spot |
Not allowed |
3 allowed,
diameter ≤ 20 mm |
Middle Layer |
Middle layer gap |
3 mm |
3 mm |
| Rot [G] |
Slight, no fall off |
Slight, no fall off |
Tongue missing |
≤ 20 mm (cumulative)
≤ 1% of plank's length |
≤ 30 mm (cumulative)
≤ 3% of plank's length |
Destruction of ends |
Slight |
≤ 2 mm each end |
Back Veneer |
Bore hole |
Diameter ≤ 30 mm |
Diameter ≤ 30 mm |
| Dead knot [G] |
No fall off |
Allowed |
| Wormholes [G] |
Slight |
Mild |
| Inbark [G] |
Slight |
Allowed |
Cymbate and round mending |
≤ 10% of plank's area |
Allowed |
Dry crack |
Slight |
Length ≤ 1000 mm;
width ≤ 10 mm |
Lack of sanding |
Slight |
Allowed |
Varnish |
Putty mending mark |
Not allowed |
Slight |
Varnish stains |
Not allowed |
Slight |
Light not even |
Not allowed |
Slight |
Varnish protruding over the edge |
Not allowed |
Slight |
Scratches /Exposed Undercoat [G] |
Not allowed |
Slight |
Varnish not even |
Not allowed |
Slight |
Others |
Tongue deflection |
Not allowed |
Not allowed |
Roughness of the tongue and groove |
Not allowed |
Slight |
Wanting arris |
Not allowed |
Slight |
Joining of tongue and groove |
Good fit |
Good fit |
Cup warping concave [G] |
Chord ≤ 0.15% of plank's width |
Cup warping convex [G] |
Chord ≤ 0.20% of plank's width |
Bow warping concave [G] |
Irrespective of grading:
- Tongue and Groove with top veneer ≤ 1 mm: Chord ≤0.5% of plank's length
- Tongue and Groove with top veneer > 1 mm: Chord ≤0.2% of plank's length
- Glue-less system with top veneer > 1 mm: Chord ≤0.2% of plank's length
|
Bow warping convex [G] |
Irrespective of grading:
- Tongue and Groove with top veneer ≤ 1 mm: Chord ≤1.0% of plank's length
- Tongue and Groove with top veneer > 1 mm: Chord ≤0.8% of plank's length
- Glue-less system with top veneer > 1 mm: Chord ≤0.4% of plank's length
|
Height difference |
0.15 mm |
0.2 mm |
Roughness of ends |
Not allowed |
Slight |
Tolerance on dimensions |
Length (+/-) 1 mm,Width (+/-) 0.1 mm,Thickness (+/-) 0.15 mm,Gap 0.2 mm |
