Yuav muaj ib txheej ntawm cov yeeb yaj kiab tiv thaiv ntawm cov khoom tshiab uas tau yuav cov hniav nyiaj hniav kub, uas yog muab los ntawm cov chaw tsim khoom ua ntej nws yuav muag rau cov neeg siv khoom. Lub hom phiaj yog los tiv thaiv lub rooj tsavxwm thiab tiv thaiv kom tsis txhob raug tsoo thaum lub sijhawm thauj mus los. Tom qab yuav lub rooj tsavxwm, koj yuav tsum tau rhuav tshem cov yeeb yaj kiab tiv thaiv kom siv nws. Muaj qee yam uas yuav tsum tau them sai sai rau thaum tshem tawm cov yeeb yaj kiab tiv thaiv.
Thaum rhuav tshem cov yeeb yaj kiab tiv thaiv ntawm lub rooj tsavxwm, xyuam xim rau kev siv txawm tias lub zog, maj mam rhuav tshem cov yeeb yaj kiab tiv thaiv, thiab tom qab ntawd so cov khoom seem ntawm lub rooj tsavxwm carved nrog cov phuam huv thiab mos.
Nws yog nruj me ntsis txwv tsis pub siv cov cuab yeej uas nws hardness tshaj lub board nto kom tshem tawm cov pa phem nyob rau hauv lub board nto los tiv thaiv kev puas tsuaj rau cov hniav hlau siding.