Qhov sib txawv tseem ceeb ntawm 60-degree thiab 30-degree utility blades yog qhov kev xav ntawm kev siv thiab cov xwm txheej siv tau.
30-degree hniav: Cov kev xav tsis zoo heev, thiab nws kuj yog ib qho astringent rau thawb thiab rub. Nws yog qhov tsim nyog rau kev ua haujlwm zoo xws li carving ua qauv ua qauv vim nws tsis yooj yim rau kev hloov. Cov hniav no ua tau zoo dua hauv cov ntawv thov uas xav tau kev tswj xyuas siab. 1
60-degree blade: Nws hnov lub teeb thiab ua tau zoo nyob rau hauv cov xwm txheej siv niaj hnub xws li tsav tsheb thauj mus los. Tus nqi kuj pheej yig thiab tsim nyog rau kev siv txhua hnub.
Cov kev sib txawv no feem ntau yog vim lub kaum sab xis tsim ntawm cov hniav. Cov kaum sib txawv yuav cuam tshuam rau kev txiav smoothness thiab kev nplij siab ntawm cov hniav. Lub 30-degree hniav muab kev tswj zoo dua vim nws lub kaum sab xis, thaum lub 60-degree hniav muab kev xaiv sib dua thiab pheej yig dua vim nws lub kaum ntse ntse.