Akazu k'ingufu: Ubunini bwa Tube 50x100mm, n'ubugari bwa 3mm, biramba cyane kandi bihamye, Gukoresha siporo yabigize umwuga. Mugihe cyo gukora, ikozwe muburyo busanzwe bwa 3. Umuyoboro usanzwe wa 3mm. imashini nziza cyane ihamye kandi iramba. Bizagutwara imyitozo mishya mugihe cy'imyitozo.