Naho bisa n’ibitagira akamaro, ama screws ni ibihimba vy’ingenzi mu mashini n’ubwubatsi bwa none. Ivyo bishobora gutuma umuntu afatanya, bikaba biri mu buryo bwiza, bushobora gusubirwamwo biciye mu mibumbe y’urudodo, bikaba bihuza ubushobozi n’ubushobozi bwo guhindura.
Ikintu gitangaje cane ni uko imiterere igena igikorwa. Indodo z’ivyuma zikora nk’ibipfukisho bitobito, zihindura inguvu z’umurongo zikaba inguvu zo gufatanya mu ruhande mu gihe c’uguhinduranya, kugira ngo zibe zihuye neza hagati y’ibihimba bihuye. Ico gishushanyo kiratuma bashobora guhangana n’ugukemura, mbere n’umuvuduko, bikaba bituma bakoreshwa cane mu bikorwa kuva ku bikoresho vyiza gushika ku bikoresho bikomeye. Impinduka ziri mu nzira y’urudodo (nk’indodo zikomeye zo gukoranya no gusenyura, urudodo rwiza rwo gukingira no gukingira imiterere) n’imiterere y’umutwe (nk’imitwe y’uguhema kugira ngo ikoreshe neza igikoresho co gukoresha n’imitwe y’ugusubiriza kugira ngo ikoreshe cane) irarushiriza kwagura ibikorwa vyavyo.
Ibikoresho vyinshi bitandukanye be n’ubuvuzi bwo ku ruhande bituma umuntu ashobora guhindura ibidukikije. Ivyuma vy’ivyuma vy’ikariboni birashobora gukomera canke bikagira umunyu kugira ngo ntihagire umugese, mu gihe ivyuma bitagira ibara bishobora guhangana n’ibidukikije vy’ubukonje, ivy’aside be n’ivy’amazi. High- ibikoresho vy'ubukomezi bishobora mbere gukoreshwa mu bikorwa bisaba nk'indege. Hariho ibikoresho vy’ubuhinga bwihariye na vyo nyene birimwo ubushobozi bwo kwiyemeza ({4}} ubushobozi bwo gushiramwo (kureka gukoresha ibikoresho vyoroshe ata preal{5}} drilling) canke - Imigero (gutuma umuntu arekura biciye ku bikoresho vyo gumesa canke guhindura urudodo), yerekana ubuhinga bushasha bukora.
Guhingura ama screws ni ikindi kintu gihambaye. Uburyo bwo gupima ubumwe kw’isi yose/ubuhinga bwa none buratuma abakoresha bashobora gukorana neza, bikaba bituma abakoresha bashobora guhura n’ingero n’ingero z’inkomezi (nk’akarorero, urugero rwa 4,8 gushika ku rugero rwa 8.8), kugabanya cane amafaranga yo gusanasana. Ivyo bishobora gusubirwamwo "guhindura - na - Gusenyura" bitanga ubushobozi bwo guhindura ibikoresho no kuvugurura ibikoresho.
Mbere n’umurongo umwe werekana ubuhinga bw’ubuhinga bw’ubuhinga- gutuma inguvu ntoyi zica biciye mu kwubaka no guhuza uburinganire n’ubuhinga biciye mu guhinduranya. Ubu bushobozi bwo gushika ku bintu bikomeye ata co bukoze ni urufunguruzo rwo gukomeza kuba ari umushinge w’inganda mu binjana n’ibindi.
