(1) Isixhobo sesakhelo sigxininise ekuvuleni kwesakhiwo kunye nebholithi yokwandisa okanye isikhonkwane sokudubula, kwaye isakhelo sinokudibaniswa nge-angle echanekileyo okanye i-angle yezinto.Kufuneka kubekho ubuncinane ama-3 amanqaku azinzileyo kwicala ngalinye lomda.Izinto zesakhelo eziphezulu kunye nezantsi kufuneka zibe nenqaku elisisigxina rhoqo kwi-400-600.
(2) Sika inxalenye yeplastiki enefuthe lokuzinzisa ubude obuhambelanayo kwaye uyibeke kwiiprofayili eziphezulu kunye nezisezantsi kwisakhelo.
(3) .xa iglasi ye-U-shaped ifakwe kwisakhelo, indawo yangaphakathi yeglasi kufuneka ihlambuluke ngokucophelela.
(4) .ufake iglasi emile okwe-U ngokutshintshana.Ubunzulu beglasi engu-U efakwe kwisakhelo esiphezulu kufuneka bube bukhulu okanye bulingane nama-20, ubunzulu beglasi engu-U efakwe kwisakhelo esisezantsi kufuneka bube bukhulu kuno okanye bulingane no-12, kunye nobunzulu beglasi engu-U. ifakwe kwizakhelo ekhohlo nasekunene kufuneka ibe nkulu okanye ilingane no-20. Xa iglasi eyi-U ifakwe kwisiqwenga sokugqibela kwaye ububanzi bokuvula abuhambelani nobubanzi beglasi, sike iglasi ecaleni kwendlela yobude, lungisa kwaye ufake. iglasi elayishiweyo ngokwe-18 "ukulandelelana kokufakwa kweglasi yokuphela", kwaye usike inxalenye yeplastiki kubude obuhambelanayo kwaye uyibeke kwicala lesakhelo.
(5) .faka i-elastic pad kwisithuba phakathi kwesakhelo kunye neglasi, kunye nomphezulu wokudibanisa phakathi kwe-pad kunye neglasi kunye nesakhelo asiyi kuba ngaphantsi kwe-10.
(6) Amalungu phakathi kwesakhelo kunye neglasi, phakathi kweglasi kunye neglasi, naphakathi kwesakhelo kunye nesakhiwo sokwakha ziyakutywinwa ngeglasi yeglu eelastiki imathiriyeli yokutywina (okanye iglu yesilicone).Elona candelo limxinwa lobunzima bokutywina obuphakathi kweglasi kunye nesakhelo siyakuba sikhulu kuno okanye silingane no-2, kwaye ubunzulu buya kuba bukhulu kuno okanye bulingane no-3;Ubukhulu bokutywina obuphakathi kweebhloko zeglasi ezimilise u-U buya kuba bukhulu kuno okanye bulingane no-1, kwaye ubunzulu bokutywina kwicala langaphandle buya kuba bukhulu kuno okanye bulingane no-3.
(7) .emva kokuba yonke iglasi ifakwe, ukungcola phezu komhlaba kuya kususwa.