Ingaphezulu elithambekile lingenye yezakhiwo zesikhunta.Ngaphambi kokuklama, yenza ukuhlaziya okuhlelekile kwesakhiwo somkhiqizo.Ngokuvumelana nesakhiwo somkhiqizo, indlela eyethulwa ukubhekana nama-undercuts athile (indlela yokubhekana nama-undercuts nayo inendawo yomugqa), bese kuba indawo yerowu kanye nephezulu etshekile Uphi umehluko?
Umgomo oyisisekelo wesiphakamisi nendawo yerowu ukumiselela ukunyakaza okuma mpo kwesikhunta ngesiqondisindlela esivundlile.Umehluko omkhulu kunayo yonke usemithonjeni ehlukene yamandla okushayela: isiphakamisi sihamba ngokuhamba kwepuleti le-thimble.Akufani nokuma komugqa kusekelwe ekwakhiweni kokuvula nokuvalwa kwesikhunta sabesilisa nabesifazane.Ngakho-ke, idizayini yesiphakamisi ihlobene nokushaya kwepuleti le-ejector, okuwumehluko omkhulu phakathi kwedizayini yesiphakamisi kanye nedizayini yendawo yerowu.
Izinkinga okufanele zinakwe lapho uklama uphahla olushelelayo:
1).Uphahla oluthambekele alugcini nje ukudlala indima yokudonsa okuyisisekelo, kodwa futhi lungadlala indima yokukhipha.2).Uphahla olutshekile kufanele lwenziwe ngomzimba oqondile ongu-5-10MM ubude njengendawo yokuvala futhi njengendiza yokuthinta.3).Ibanga lokudonsa eliwumgogodla kufanele libe likhulu okungenani ngo-2mm kunokujula kwe-undercut.4).Kufanele kube nesikhala esanele sokuthi i-top ethambekele ishelele lapho i-inclined top ishelela khona endaweni yeglue yomkhiqizo, futhi akufanele kube khona ukufosholo kweglue noma ukuphazamiseka kwezinye izingxenye.

Uma phezulu kuthambekele, kuzoshiya i-imprint kumkhiqizo, okuyinto evamile.