(1) Elu nkenke, ọsọ, kerf dị warara, mpaghara okpomọkụ na-emetụta ntakịrị, ịkpụ elu dị nro.(2) Laser ọnwụ isi adịghị na kọntaktị na elu nke ihe, adịghị ọkọ na workpiece.(3) Kerf kacha warara, mpaghara okpomọkụ emetụtara, nrụrụ mpaghara nke workpie ...