Vijtsam luam ntawv yog rau qhov luam ntawv. Nws yog hu ua plaub txoj hauv kev luam ua ke nrog kev kos duab, kos duab thiab kos duab. Qhov luam ntawv suav nrog daim ntawv sau, phaj kos duab, tshuaj tsuag luam ntawv thiab tshuaj ntsuam luam ntawv. Lub hauv paus ntsiab lus ntawm qhov phaj luam ntawv yog: thaum luam ntawv phaj luam ntawv (lub qhov uas tuaj yeem hla dhau cov kua roj hmab ua los ntawm cov phaj hauv paus ntawm cov ntawv zaj duab xis phaj lossis lwm daim hlau), cov kua roj hmab tau pauv mus rau hauv txheej txheej (ntawv, cov yas , thiab lwm yam) los ntawm lub qhov ntawm lub phaj phaj los ntawm qee qhov siab los tsim cov duab lossis cov ntawv.
Thaum luam ntawv, cov kua roj silicone tau hloov pauv mus rau hauv txheej txheej los ntawm cov ntxaij ntawm cov duab nraaj dhau los ntawm kev txau ntawm cov scraper los tsim cov duab tib yam li qhov qub. Cov cuab yeej luam ntawv yog yooj yim, ua haujlwm yooj yim, luam ntawv yooj yim thiab ua phaj, tus nqi qis thiab muaj zog hloov pauv tau. Kev tshuaj ntsuam luam ntawv muaj ntau yam kev siv. Cov ntawv luam tawm ib txwm muaj xws li: xim roj pleev xim, ntawv tshaj tawm, daim npav ua lag luam, npog npog, cov cim khoom lag luam, luam ntawv thiab zas khaub ncaws, thiab lwm yam.
