Isikhwama sesikhwama sokumisa uziphu sibizwa nangokuthi isikhwama esizisekelayo.Isikhwama esizisekela esinoziphu singaphinda sivalwe futhi sivulwe kabusha. Ngokusho kwezindlela ezihlukene zokuhlanganisa onqenqemeni, ihlukaniswe yaba yi-4 enqenqemeni yokuhlanganisa kanye ne-edge emithathu. Ukuhlanganisa okune emaphethelweni kusho ukuthi kukhona ungqimba lwebhande elivamile elisemaphethelweni ngaphezu kokuvala uziphu lapho iphakethe lomkhiqizo liphuma efekthri. Uma isetshenziswa, ibhande elivamile elinqenqemeni lidinga ukudatshulwa kuqala, bese i-zipper isetshenziselwe ukubona ukuvaleka okuphindaphindiwe. Le ndlela ixazulula inkinga yokuthi amandla okubhinca onqenqemeni lweziphu mancane futhi awahambisani nezinto zokuhamba.