1. Txoj cai xaiv. Tsuas yog xaiv cov khoom lag luam kom zoo raws li cov khoom sib tsoo tuaj yeem peb xyuas kom zoo tshaj plaws cov nyhuv zoo tshaj plaws thiab ua kom muaj nuj nqis ntawm tus nqi ntawm lub louver. Lub log zoo louver muaj zog muaj lub zog txiav muaj zog, muaj cov khoom siv tiv thaiv ntau dua, thiab tuaj yeem ua tiav cov khoom sib txawv loj-teev sib tsoo thiab polishing.
2. Txaus siab. Thaum lub sij hawm sib tsoo, ntau dhau heev yuav tsum tsis txhob siv rau lub louver tawg, thiab ntau dhau lawm yuav ua rau cov cua sov uas tau ua kom nrawm dua thiab txo cov txiaj ntsig ntawm cov abrasive. Txawm li cas los xij, yog lub siab thov rau cov louver tsis txaus, lub louver tsis tuaj yeem sib tsoo nrog cov hlau, uas tsis ua tiav kev sib tsoo tau zoo, thiab tseem tau sib tsoo lub sijhawm sib tsoo.
3. Siv tau siv. Cov Louer xav tau los ua ib qho kev sib tsoo nrog cov khoom sib tsoo thaum siv, feem ntau ntawm {1}}}}}}} kev dav hlau lossis kab rov tav. Yog tias nws tsawg dua li lub ces kaum sab xis no yuav nkag mus rau hauv kev sib cuag nrog cov hlau, ua rau lub lover coj mus nrawm dua. Yog tias nws tseem ceeb tshaj qhov kaum, cov hniav tsis tuaj yeem siv ua tiav. Raws li qhov tshwm sim, ib feem ntawm louver yog overworn, thiab thaum kawg nws tsis yog polished txaus.