Vim hais tias ntawm ntse ntse dua blunt siv chav ua noj riam, chav ua noj riam nyob rau hauv thiaj li yuav xyuas kom meej cov hniav ntse thiab tawv, yuav tsum tau ib ntus riam, thawj yam yuav tsum to taub, lub luag hauj lwm ntawm sharpener thiab sharpening rods yog txawv.
Whet riam pas nrig yuav siv tau los ua kom cov hniav ntse, tshem tawm cov nplua tsis du, yog tias rab riam yog blunt, thov siv cov grindstone.
Raws li qhov xwm txheej ntawm kev siv riam hauv chav ua noj, cov hniav yuav tsis yooj yim pom los ntawm blunt, tab sis yuav muaj qhov tshwm sim me ntsis nkhaus, qee qhov yob mus rau sab xis, qee qhov yob mus rau sab laug, hom 'S', qhov no yog cov tsos mob ntawm cov hniav npub, yog tias tsis ua, yuav ua rau ntau dua thiab npub, lub sijhawm no yuav tsum tau kho cov hniav nrog rab riam.
Siv riam riam, kom muaj kev nyab xeeb, txoj kev raug yog siv sab laug tes tuav rab riam, sab tes xis nqa rab riam hauv chav ua noj, cov hniav nce toj, riam bar tsis rov qab thiab tawm ntawm ntug kev sib tsoo, sib tsoo rods yog 20 - tiv tauj nrog cov hniav. Lub kaum sab xis
25 degrees, taw tes rau kev taw qhia ntawm cheb, nyob rau hauv ib txwm muaj xwm txheej ntawm txhua sab ntawm cov hniav muaj ob mus rau peb lub sij hawm yuav ntse, sharpened nws chopper yog yooj yim, cov yam ntxwv ntawm zoo thiab ceev.
