Kev taw qhia kev teeb tsa ntawm lub voj voog saw hniav ncaj qha cuam tshuam rau kev txiav thiab kev nyab xeeb. Txoj kev txhim kho kom raug yog nrog cov saw hniav tig mus rau pem hauv ntej (piv txwv li, cov lus qhia ntawm cov hniav taw qhia rau kev txiav). Qhov no ua kom cov hniav zoo txiav cov khoom thaum tig, thaum txo kev ncaws pob thiab kev co. Thaum txhim kho, xyuam xim rau cov hauv qab no:
Txheeb xyuas cov kev taw qhia ntawm cov hniav: xyuas kom cov lus qhia ntawm cov hniav yog tig mus rau kev txiav. Cov hniav feem ntau muaj ib tug xub qhia txog kev sib hloov.
Tighten cov hniav: Siv ib tug haum ciaj ntswj kom ruaj ntseg ntawm cov hniav mus rau lub ncej, tiv thaiv loosening.
Kho tus neeg zov: Xyuas kom cov hniav tiv thaiv npog qhov tsis yog - ua haujlwm ntawm cov hniav kom tiv thaiv kev sib tsoo.
Kev taw qhia kev teeb tsa tsis raug tuaj yeem ua rau tsis muaj peev xwm txiav, nrawm nrawm hnav, thiab txawm tias muaj kev nyab xeeb. Txhawm rau txiav cov khoom sib txawv, nws tseem yuav tsum tau xaiv cov hniav uas tsim nyog thiab lub suab. Piv txwv li, cov hniav taw qhia feem ntau yog siv rau kev txiav ntoo, thaum hlau txiav yuav tsum tau tensile hniav los yog raker hniav.