Kwerekana ibicuruzwa:
Muri sisitemu yo kuvoma, inkokora ni umuyoboro uhuza uhindura icyerekezo.Nk’uko Angle ibivuga, hari bitatu bikunze gukoreshwa 45 ° na 90 ° 180 °, usibye ibikenerwa mu buhanga ndetse n’ibindi bidasanzwe bya Angle bigoramye nka 60 ° ukurikije umushinga.Ibikoresho by'inkokora birimo ibyuma bikozwe mu cyuma, ibyuma bidafite ingese, ibyuma bivanze, ibyuma byibagirana, ibyuma bya karubone, ibyuma bidafite fer na plastiki.
Inzira zo guhuza umuyoboro ni: gusudira mu buryo butaziguye (inzira ikoreshwa cyane) guhuza flange, guhuza ubushyuhe, guhuza amashanyarazi, guhuza umugozi no guhuza amacomeka, nibindi ukurikije inzira yumusaruro, irashobora kugabanywamo: gusudira inkokora, kashe yinkokora, gusunika inkokora, gutera inkokora, inkokora yo gusudira, nibindi.