Chisels muaj cov qauv sib txawv raws li kev siv ntau:
Ca chisel: Qhov txiav txiav yog tiaj, thiab qhov txiav sab thiab cov chisel lub cev yog nyob rau hauv daim duab peb sab inverted isosceles. Nws yog tsuas yog siv los ua cov qhov square lossis kho qee qhov square qhov;
Oblique txaug: Lub ntug qhov riam yog li ntawm 45 ° kaum, thiab riam riam thiab chisel lub cev yog nyob rau hauv daim duab peb sab sab xis. Nws yog tsuas yog siv los kho, thiab lawv feem ntau siv rau kev kho qee fab tuag ntawm carving thiab carving;
Round chisel: Tus hniav yog semi-ncig, feem ntau yog siv los ua puag ncig lossis kheej li qhov;
Pob zeb diamond chisel: hniav yog V-zoo li tus, uas yog tsawg tam sim no. Nws feem ntau yog siv los ua ntoo thiab kho.