Hpun a anisotropic atsam hpe shayawm kau nna, langai sha re ai atsam hte ngang grin ai hkrang hpe lu la na matu, plywood gaw, makau grup yin na veneer n-gang ni a symmetry hte perpendicularity ngu ai madung npawt tara lahkawng hpe hkan sa ai. Symmetry npawt tara gaw, plywood a symmetry a ginjaw plane a maga lahkawng maga na veneers ni gaw, hpun a arawn alai, veneer a n-gun, plies jahpan, fiber orientation, hka n-gun, hte kaga lam ni hpe n sawn ai sha, symmetrical rai ra ai. Plywood langai a kata kaw, amyu langai hte n-gun n bung ai veneer ni hpe lang mai ai zawn, amyu langai hte n-gun n bung ai veneer ni hpe mung lang mai ai. Raitim, symmetry a ginjaw plane a maga lahkawng maga na symmetrical veneer layers lahkawng gaw, amyu langai sha hte n-gun langai sha rai ra ai. Myi man hte hpang maga na laika man ni hpe amyu bawsang n bung ai hku galaw na ahkang jaw da ai.
Plywood gaw ndai madung tara lahkawng yan hpe hkan sa lu na matu, plywood hta odd number of plies nga ra ai. Dai majaw, plywood hpe gaw, masum, manga, sanit zawn re ai plies ni hpe n bung ai hku galaw ai. Plywood n-gang ni a mying ni gaw: ntsa na n-gang hpe faceboard ngu shamying nna, kata na n-gang hpe coreboard ngu shamying ma ai; shawng na myi man hpe topboard ngu nna, hpang na myi man hpe backboard ngu shamying ma ai. Faceboard hte maren sha n-gun rawng ai coreboard hpe galu ai core board (sh) lapran na board ngu shamying ma ai. Cavity board blank hpe shinggyin ai shaloi, ntsa hte hpang maga de shinggan de mada yu ra ai....
