1. Kev Cog Lus. Thaum cov ntaub ntawv yas tsis sib xws, shrinkage tshwm sim, ua rau crate crate mus ua warp lossis ntsws. Txhawm rau kom daws tau qhov teeb meem no, nws yog ib qho tseem ceeb kom paub meej tias cov pwm tsim tau cov khoom siv txias kom yooj yim rau pab txhawb cov khoom cua txias ntawm cov khoom siv yas. Ib qho ntxiv, kho cov pwm kub thiab cov chaw siab tuaj yeem pab txo kom txo cov khoom lag luam zoo kawg.
2. Seem cim. Dents yog cov kev txom nyem lossis cov cim uas tshwm rau saum npoo ntawm crate, uas tshwm sim los ntawm kev txias tsis huv ntawm cov khoom siv yas hauv cov khoom siv tsis huv. Txhawm rau tiv thaiv kev tog, nws yog qhov tsim nyog los ua kom zoo rau cov ntim thiab txias theem ntawm cov txheej txheem moulding. Ua kom muaj kev txhaj tshuaj thiab ntsuas kub, ntxiv rau kev siv cov quav ntxiv uas yog fitters lossis txhawb cov neeg sawv cev, tseem tuaj yeem pab txo cov cim dab dej.
3. Warping. Nws tuaj yeem tshwm sim thaum lub sijhawm moulding ntawm cov crimates yas. Warping hais txog kev khoov lossis deformation ntawm crates tom qab txias, feem ntau tshwm sim los ntawm qhov tsis sib xws ntawm cov yas yas lossis txias txias. Txhawm rau txo cov rog, tus yuam sij yog tsim qauv nrog cov qauv hluav taws xob tsis zoo thiab cov qauv kev txhawb nqa uas tsim nyog txhawb nqa sab hauv kev ntxhov siab ntau li ntau tau. Kho lub sijhawm txias thiab qhov kub thiab txias, zoo li siv cov ntaub ntawv nrog cov cua sov tsis kam, kuj tseem tuaj yeem pab tiv thaiv kev ua rog thaum lub cev crates.
4. Nto qhov tsis xws luag. Xws li khawb, streaks, lossis qhov khuam kuj tseem tuaj yeem tshwm sim thaum lub tshuab pwm ntawm criting. Cov tsis xws luag yog tshwm sim los ntawm kev paug hauv cov khoom siv yas, cov nplaim hluav taws tsis txaus ntawm cov khoom tiav ntawm cov khoom tiav. Txhawm rau daws cov chaw tsis xws luag
