(1) Impahla yefreyimu igxilile ekuvuleni kwesakhiwo ngebhawodi yokunweba noma isipikili sokudubula, futhi uhlaka lungaxhunywa nge-engeli engakwesokudla noma nge-engeli yezinto. Okungenani kufanele kube namaphoyinti angashintshi angu-3 ohlangothini ngalunye lomngcele. Izinto zefreyimu engenhla nangaphansi kufanele ibe nephuzu eligxilile njalo ngama-400-600.
(2) Sika ingxenye yepulasitiki enomphumela wokuzinzisa ibe ubude obuhambisanayo bese uyifaka kumaphrofayili aphezulu naphansi ohlaka.
(3) . lapho ingilazi efana ne-U ifakwe kuhlaka, indawo yangaphakathi yengilazi kufanele ihlanzwe ngokucophelela.
(4) . faka ingilazi emise okwe-U ngokushintshana. Ukujula kwengilazi emise okwe-U efakwe ohlakeni olungaphezulu kufanele kube kukhulu noma kulingane no-20, ukujula kwengilazi emise okuka-U efakwe ohlakeni oluphansi kufanele kube kukhulu noma kulingane no-12, futhi ukujula kwengilazi emise okwe-U efakwe ozimele kwesokunxele nakwesokudla kufanele kube kukhulu noma kulingane no-20. Lapho ingilazi emise okwe-U ishuthekwa engxenyeni yokugcina yengilazi, ububanzi bengilazi bube buyi-consis, ububanzi bengilazi bube buyi-consis. lungisa futhi ufake ingilazi elayishiwe ngokusho kwe-18 "ukufakwa ngokulandelana kwengilazi yokuphela", futhi usike ingxenye yepulasitiki ibe ubude obuhambisanayo bese uyibeka eceleni kohlaka.
(5) . faka iphedi elinwebekayo esikhaleni phakathi kohlaka nengilazi, futhi indawo yokuxhumana phakathi kwephedi nengilazi kanye nohlaka akufanele kube ngaphansi kuka-10.
(6) Amalunga phakathi kohlaka nengilazi, phakathi kwengilazi nengilazi, naphakathi kohlaka nesakhiwo sebhilidi azovalwa ngeglue yengilazi into evalekayo yokuvala (noma i-silicone glue). Ingxenye encane yogqinsi olunwebekayo lokuvala phakathi kwengilazi nohlaka izoba nkulu noma ilingane no-2, futhi ukujula kuyoba kukhulu noma kulingane no-3; Ugqinsi olunwebekayo lokuvala phakathi kwamabhulokhi engilazi amise okwe-U luzoba lukhulu noma lulingane no-1, futhi ukujula kokuvala okuya ngaseceleni kwangaphandle kuzoba kukhulu noma kulingane no-3.
(7) . ngemuva kokuthi yonke ingilazi ifakiwe, ukungcola okungaphezulu kuzosuswa.