SVEZA Interior and Exterior Plywood grades Defects Part 26: Pin knot Pockets (without bark inclusions)
Pin knot is a sound intergrown knot up to 3 mm in diameter.
Pocket is a cavity inside the wood or between the annual rings, filled with gum or resins.
|Pockets are measured by length and width.|
|The average of the minimum and the maximum diameters is taken as the knot (hole) diameter|