Gacan-ku-qabashadu waa qayb muhiim ah oo ka mid ah khaanadaha, kaas oo loo isticmaalo in lagu rakibo khaanadda si loogu furo oo loo xiro albaabka si habboon. 1. Marka loo eego walxaha: hal bir ah, alloy, caag, dhoobo, muraayad, iwm. 2. Marka loo eego qaabka: tubular, strip, spherical iyo qaabab joomatari oo kala duwan, iwm. 3