Okwesithathu, ukungunda kuyalungiswa kwaye kuveliswa. Isinyathelo sokugqibela senkqubo yokuvelisa i-mold kukuguqula umzobo woyilo ube ngumzobo womzimba. Isinyathelo esilandelayo kukuthenga izinto eziluhlaza ngokwesicwangciso sokuvelisa esilungisiweyo, kwaye emva koko usebenze ukubunjwa ngokobukhulu becandelo ngalinye lomzobo woyilo. Ishishini lineemfuno ezahlukeneyo zokusetyenziswa kwesikhunta. Ngoko ke, xa kusenziwa iimbumba, iimbumba kufuneka zicutshungulwe kwaye zenziwe ngokungqongqo ngokuhambelana nemizobo yoyilo, ukwenzela ukuba iimbumba ezicutshungulwayo zikwazi ukukhonza abantu kakuhle kwaye zivumele abantu ukuba basebenzise iimbumba ukuvelisa iimveliso eziphezulu.