Yog vim li cas riam blunt?
Feem ntau hais lus, muaj ob qho laj thawj rau qhov bluntness ntawm riam.
Ua ntej, txiav ntug tau deflected rau sab laug lossis sab xis
tsis nyob rau hauv ib txoj kab ncaj nraim, los yog curled
Cov hniav yog skewed los ntawm liab qab qhov muag.
Lub sijhawm no yog kho cov hniav
Ua kom cov hniav ntsug ntau dua
Es tsis txhob sharpening cov hniav thinner
Qhov no yog ntau tshaj 90 feem pua ntawm cov
Qee zaum kuv tsuas yog rub rov qab rau ntawm qhov chaw nyuaj
Cov riam yuav ntse dua
Yog li qhov no yog straightening cov hniav
Lwm qhov ua rau muaj riam phom yog tias rab riam tau siv ntev dhau lawm
tsis zom
Cov ntug txiav ua tuab (raws li qhia hauv cov duab hauv qab no),
Qhov xwm txheej no suav txog 10 feem pua
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Hauv qhov no, cov hniav yuav tsum tau sharpened
sharpener los yog whetstone
Yog li ntawd, nrhiav seb yog vim li cas riam yog npub
Koj yuav pom tias feem ntau sharpening yog ntau txog kho cov hniav
Es tsis txhob sharpening cov hniav thinner
Cov duab hauv qab no yog cov hniav tom qab whetstone sharpening
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Txhawm rau ua kom tiav, rab riam ntse ntse yog ceev, nws yuav ua rau cov riam raug mob, thiab nws yuav tsum tau sharpened ntau zaus
Cov riam pheej yig dua tsis muaj teeb meem, cov khoom kim yuav tsis kam siv lawv
Whetstone sharpening yog siv sij hawm thiab siv zog, yuav tsum muaj kev txawj me ntsis
yog li pros thiab cons
