pitch pocket

pitch pocket

1. A defect in softwoods; consists of an opening in the grain that contains pitch or resin. Also called a resin pocket.
2. A metal flange around the base of any roof-penetrating member (or component) which is filled with pitch or flashing cement to provide a seal.
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Figure 3 shows a pitch pocket at the end of a roof rafter.
Another critical component of pitch bleed is an easy path for flow, such as along the grain of a knot or out from a pitch pocket. (2) Pitch bleed can occur in isolated spots (Figure 10) or in large pockets or seams (Figure 11).
SIXTEEN open wins this year make Whistlewood the most successful British-bred greyhound of 2003 in terms of races won, ahead of Nialls Star(13), Midway Tomsscout (12), Missed A Page (10) and Pitch Pocket (10).
Bolt holes and the like can be protected with a pitch pocket or additional flashing.
Pennsylvania cherry also has the least amount of pitch pockets. Buyers come from all over the world searching for the color, also called pink salmon.
"It also is a great wood for some of our more casual/rustic collections and the natural defects such as pitch pockets and pin knots are not too overwhelming--just enough defect that the lumber is still stable," he added.
Good cabinets are solid wood free of knots, pitch pockets, sanding scars, grain irregularities and color differences.
A latex primer will work better than oil to "spot prime" knots and pitch pockets (dried).
Pitch pockets should be filled with pourable sealer to the top of the pocket with no cracks in the sealer.
The following 10 defect categories were considered, plus clear wood: birds eye & freckle, bark & pitch pockets, wane, split, blue stain, stain, pith, dead knot, live knot, and hole.
Look on trees for pitch pockets, or try to find an old stump that has dry strips of wood saturated with pitch.