Vim li cas qee cov ntaub pam vov xav tau dej thaum siv?

Vim li cas qee cov khau khiab yuav tsum tau ntxiv dej thaum lawv siv?
Tshwj xeeb tshaj cov dej sandpapers. Qhov no hom ntawm cov xuab zeb ua haujlwm zoo dua hauv qhov chaw ntub dej. Ntxiv dej muaj ob peb qhov zoo. Ib qho yog tias nws tuaj yeem txias yam nqes thiab tiv thaiv cov khoom lossis cov suab paj nruag nws tus kheej los ntawm kev puas tsuaj vim yog ntau dhau los ntawm kev sib txhuam. Lwm qhov yog tias nws ua rau cov khib nyiab tawm yooj yim dua, ua rau cov khau tawg yooj yim, thiab nres cov chaw khib nyiab los ntawm kev thaiv cov chaw ntawm cov nplej, yog li cov kev sib tsoo tsis muaj cuam tshuam. Tus thib peb yog tias nws ua rau kev sib tsoo ntau dua. Thaum nws ntub, cov khib nyiab tuaj yeem ploj mus nrog cov dej tau yooj yim dua thiab cov txheej txheem sib tsoo yog smoother.

Thaum koj siv nws, yog tias nws yog qhov me me, tsuas yog muab tso rau hauv dej thiab siv cov xuab zeb los zom. Rau tej yam loj lossis tej yam uas tsis tuaj yeem tsau rau hauv dej yooj yim, koj tuaj yeem siv cov sib tsoo ntawm cov dej sib tsoo ua ntej, tom qab ntawd hloov mus rau cov dej sandpaper, ces hloov mus rau cov dej sandpaper thiab ntxiv dej thaum sib tsoo. Thaum muaj dej tsawg dua lossis nws dries li, ntxiv qee cov hauv lub sijhawm kom paub tseeb tias cov nyhuv sib tsoo yog qhov zoo.

Tab sis koj yuav tsum paub tias dej xuab zeb yuav tsum tsis txhob siv rau kev sib tsoo qhuav. Txwv tsis pub, nws txoj kev ua tau zoo yuav cuam tshuam. Nyob rau tib lub sijhawm, pib nrog nplua-grit sandpaper thiab tom qab ntawd txav mus rau tus coarser grit. Txoj kev no, koj tuaj yeem tau txais kev ua tau zoo polishing.

Tag nrho txhua yam, ntxiv cov dej thaum siv cov xuab zeb yog ua kom cov txheej txheem sib tsoo zoo dua, txhim kho kev ua haujlwm zoo thiab qhov zoo.