Gusya bisanzwe birangwa nkibikorwa byo gukuraho ibintu bike bishobora gutanga ibisobanuro byukuri kandi birangiye. Ariko rero, kuza kwimashini zogusya ziteye imbere hamwe no gusya inziga byazamuye urwego rwo gusya kumashini yangiza aho uburinganire bwuzuye hamwe nubuso burangiritse hamwe nigipimo kinini cyo kuvanaho ibintu bishobora kugerwaho no kubintu bitarinze gukomera.

Ukoresheje uburyo bwihariye bwo guhuza hamwe nubuhanga budasanzwe bwo gukora, uruziga rusya rufite urusyo rukarishye, ubushyuhe buke bwo gusya hamwe nuburyo bwiza bwo gusya. Kugumana imiterere myiza yakazi, nta gutwika. Uburinganire buringaniye bwo gusya burahoraho, uburinganire buri munsi ya 0.1 mm, naho coaxiality iri munsi ya 0.1 mm, byoroshye guhuza no gukoresha. Ikoreshwa mugusya ibintu bitandukanye byinkoni mu nganda zitwara inganda n’imodoka.

Kurangiza ubuso; gutemagura no gutandukana; kumanuka, gutesha agaciro; kuvanaho ibicuruzwa birangiye neza kimwe na silindrike; gusya kw'ibikoresho no gukata no kongera gukarishya kimwe.