Kev ua hauj lwm raising kuj tseem ceeb heev rau kev saib xyuas ntawm rab koob rollers. Thaum tsa, cov koob txhaj tshuaj yog nqus cov ntaub, cov ntaub ntawm qhov chaw pub mis yog dhia hnyav, muaj qhov tshwm sim rub tawm ntawm qhov chaw pub mis, thiab fluff ntawm cov ntaub tsis tuaj yeem sawv rov qab los, kev loj hlob yuav tsum tau nres. Sawv dua, txwv tsis pub nws yuav ua rau cov khaub ncaws thiab cov ntaub puas. Thaum tsa, nws tseem yuav tsum tau nruj me ntsis tiv thaiv cov ntaub los ntawm kev tawg, vim hais tias cov ntaub tawg yog qhwv ib ncig ntawm lub counter-clockwise rau cov menyuam, tsis tsuas yog cov ntaub yog torn kiag li, tab sis kuj rab koob rau cov menyuam raug mob hnyav thiab txawm scrapped. Thaum lub sijhawm ua haujlwm, nws yuav tsum tau muab sau tseg tias cov ntaub yuav tsum tau txav mus rau sab laug thiab sab xis tsis tu ncua, uas tsis tsuas yog ua kom lub ntsej muag zoo ib yam, tab sis kuj ua kom cov ntaub zoo. Tsis tas li ntawd, lub koob txhaj tshuaj ntawm cov koob txhaj tshuaj tshiab yog qhov ntse heev thiab yuav tsum tau ua kom tiav ua ntej siv; Feem ntau, rab koob yuav dhau los ua blunt thiab sharpened tom qab siv cov raising cov menyuam li ib nrab xyoo.
Nyob rau hauv lub sij hawm ntev ntawm kev loj hlob, tib neeg tau sau ntau yam kev paub, xws li tentering ua ntej raising yog qhov zoo rau kev loj hlob, kev ua haujlwm zoo yuav tsum tau ua nyob rau hauv txhua qhov raising, thiab ntau lub teeb rub yuav tsum tau ua kom zoo rau kev loj hlob.
Kev loj hlob yuav tsum tau luv luv, tuab thiab sib xws pawg. Qhov tseem ceeb tshaj, koj yuav tsum ceev faj tsis txhob nce ntau dhau, txwv tsis pub nws yuav cuam tshuam rau lub zog ntawm cov ntaub. Feem ntau, lub zog yuav tsum tau coj mus kuaj thaum pawg nyob ze rau tus qauv, thiab lub zog weft tom qab tsa yuav tsum yog tsawg kawg yog 177N (18kgf) lossis siab dua, txwv tsis pub nws yuav cuam tshuam qhov ceev.
Nyob rau hauv kev xyaum mus sij hawm ntev, tib neeg tau sau cov "peb tuaj koom" system ntawm kev tuaj koom kev soj ntsuam, kev tshawb nrhiav thiab kev sib cuag tsis tu ncua ntawm txoj kev ua haujlwm, uas muaj txiaj ntsig zoo rau kev txhim kho thiab ua kom cov lus nug nce.