(7) Gukaraba: Ubwoko bwihuta bufite ishusho yimpeta.Ishyirwa hagati yubuso bwunganira bwa bolt, screw cyangwa nut hamwe nubuso bwibice bihuza, byongera ubuso bwo guhuza ibice byahujwe, bigabanya umuvuduko kuri buri gice kandi bikarinda ubuso bwibice byahujwe kwangirika;ubundi bwoko bwo gukaraba neza, Irashobora kandi kugira uruhare mukurinda ibinyomoro kurekura.

(8)Kugumana impeta: Yashyizwe mumashanyarazi cyangwa umwobo wububiko bwibyuma nibikoresho, kandi igira uruhare mukurinda ibice kumurongo cyangwa umwobo kugenda ibumoso niburyo.

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.Ubu buryo bwo guhuza bwitwa rivet ihuza, cyangwa kuzunguruka mugihe gito.Ni ihuriro ridakurwaho.Kuberako gutandukanya ibice bibiri byahujwe hamwe, imirongo yibice igomba gucika.

.Guhuza byombi bivuga ubwoko bwihuta butangwa nuruvange rwimyenda idasanzwe, ibinyomoro hamwe nogeshe, nkimbaraga zikomeye za hexagon umutwe wa bolt ihuza ibice byububiko.

(12)Gusudira imisumari: Bitewe no gufatisha ibice bitandukanye bigizwe ninkoni zisennye hamwe n imitwe yimisumari (cyangwa nta mutwe wumusumari), birashizweho kandi bihuzwa nigice (cyangwa ibice) mukudoda kugirango bihuze nibindi bice.