Birch edge panels.
Technical demands for tabletop
|
PANEL GRADING |
Quality Description |
||||
|
|
1 |
2 |
3 |
4 |
5 |
|
1. Fresh red knots, max. 10 mm. |
Yes |
Yes |
Yes |
Yes |
Yes |
|
2. Fresh red knots, more than 10 mm. |
No |
Yes |
Yes |
Yes |
Yes |
|
3. Small brown spots/marks, unlimited |
Yes |
Yes |
Yes |
Yes |
Yes |
|
4. Fresh red knots with splits, max. 20 x ½ mm. |
No |
No |
Yes |
Yes |
Yes |
|
5. Fresh red knots with splits, unlimited |
No |
No |
No |
Yes |
Yes |
|
6. Black intergrown knots max. diameter 6 mm. |
No |
No |
Yes |
Yes |
Yes |
|
7. Black intergrown knots max. diameter 15 mm. |
No |
No |
No |
Yes |
Yes |
|
8. Black intergrown knots, unlimited |
No |
No |
No |
Yes |
Yes |
|
9. Rotten knots, max. diameter 10 mm. |
No |
No |
No |
Yes |
Yes |
|
10. Rotten knots, max. diameter 25 mm. |
No |
No |
No |
No |
Yes |
|
11. Knot holes, max. diameter 15 x 10 mm. |
No |
No |
No |
No |
Yes |
|
12. Pith, approx. 100 mm |
No |
No |
No |
Yes |
Yes |
|
13. Pith, unlimited |
No |
No |
No |
No |
Yes |
|
14. Star shakes, generally |
No |
No |
No |
No |
Yes |
|
15. Natural colour differences |
Yes |
Yes |
Yes |
Yes |
Yes |
|
16. Discoloration (blue stain) |
No |
No |
No |
Yes |
Yes |
|
17. Wane, max. 100 mm., must not run into the end |
No |
No |
No |
No |
Yes |
|
18. Rot |
No |
No |
No |
No |
Yes |
|
19. In-bark |
No |
No |
No |
Yes |
Yes |
Sides A and B of a tabletop must conform to column 3 and 5 correspondingly.