Sandpaper tseem hu ua sandpaper. Cov khoom siv abrasive ntawm ntau qhov ntau thiab tsawg yog ntawm cov ntaub los yog cov ntawv hauv paus, uas yog siv rau ib txheej ntawm cov hmoov abrasive tshwj xeeb. Sandpaper yog siv ob qho tib si hauv "phau ntawv" hom thiab hauv tshuab hom, rau kev ua haujlwm (ntxuav) ntau qhov chaw, uas yog tom qab primed, sanded, pleev xim rau, varnished, thiab lwm yam. Siv cov ntawv xuab zeb, koj tuaj yeem tshem tawm cov xim qub, xeb. Feem ntau, cov ntawv xuab zeb zoo li no tau tsim hauv cov yob, tab sis kuj tseem muaj ntau txoj kev xaiv niaj hnub, piv txwv li, daim txhuam cev emery. Rau kev tu thaj chaw loj txaus, nws yog qhov zoo kom muaj ib qho tshwj xeeb cork bar, uas cov emery txuas nrog. Yog tias koj xav tau ntxuav cov hlau, ces koj tsis tuaj yeem ua yam tsis muaj kev xyaum, uas yuav ua haujlwm rau kev sib hloov disc sib tsoo log thiab txhuam txhuam
k.
Yog tias koj xav tau ntawv xuab zeb rau ib lub hom phiaj lossis lwm qhov, nws qhov kev faib tawm yuav pab koj xaiv qhov koj xaivhaum zoo tshaj plaws. Yog li, emery yog cais raws li hom ntawm lub hauv paus. Daim tawv nqaij daim tawv tuaj yeem ua tau ob qho tib si tsis tu ncua thiab tsis muaj dej. Tsis tas li ntawd, cov khoom siv no tuaj yeem tiv taus kev ntxhov siab ntau heev. Nws tus nqi qis, tab sis nws tsis hnav-resistant thiab hnav sai sai. Sandpaper raws li ntaub (polyester los yog paj rwb) yog ntau ruaj, elastic thiab resistant rau ya raws. Kuj tseem muaj cov ntawv xuab zeb ntawm kev sib xyaw ua ke, tau los ntawm gluing ntaub thiab ntawv. Cov ntaub ntawv nyuaj tshwj xeeb yog ua tiav ntawm cov tshuab tshwj xeeb emery, abrasive discs raws li fiber ntau.
Txawm li cas los xij, paub qhov kev faib tawm tsis txaus, nws kuj yuav tsum tau txais los ntawm tus account
grit. Nws yog nws tus yam ntxwv tseem ceeb tshaj plaws ntawm cov khoom no. Lub coarser daim ntawv xuab zeb, qhov tsawg nws cov nplej loj. Qhov coarsest sandpaper ntsuam xyuas yog li ntawm 12 txog 16. Nrog nws cov kev pab, lawv feem ntau tshem tawm cov xim qub, kua roj vanish ntawm qhov chaw, thiab ntxuav cov roj kom qhuav.
Ua raws li nws yog daim ntawv xuab zeb tsawg dua, qhov grit Performance index ntawm 24 txog 40. Nws kuj tuaj yeem siv los ntxuav cov xim. Tab sis cov ntawv xuab zeb nrog abrasiveness ntawm 60-80 yog siv tom qab qhov chaw tau ntxuav. Xws li cov ntawv xuab zeb nqa tawm ntxhib sib tsoo. Txhawm rau kom du thiab theem saum npoo, siv cov ntawv xuab zeb nrog grit ntawm 80-150. Nws kuj tshem tawm cov imperfections thiab irregularities seem tom qab sib tsoo ntxhib.
Sanding sheets for finer work have a grain size of 150mus 320. Lawv kho qhov chaw ntawm theem kawg, tam sim ntawd ua ntej primer thiab tom qab nws, ua ntej pleev xim. Tom qab sib tsoo nrog xws li nplua-grained emery, ntoo nto ua zoo kawg nkaus du. Tej zaum nws tsis tas yuav pleev xim, tab sis tsuas yog varnished.
Txawm li cas los xij, kuj tseem muaj emery super-nyias. Nws qhov Performance index yog li ntawm 360 txog 4000. Qhov no yog xoom-qib sandpaper, feem ntau "maj", thiab feem ntau yog siv los xuab zeb ib tug twb pleev xim rau nto. Siv cov tawv nqaij zoo li no, koj tuaj yeem tshem tawm qhov tsis tsim nyog glossy ntawm cov xim, du tawm qhov khawb me tshaj plaws, thiab tshem tawm cov chaw cog qoob loo.
