Phambi kokuvula ukungunda, uhlalutye ngokupheleleyo ukubonakala kweziphene kumgangatho weplastiki (njengereyithi yokuncipha, njl.
Imbonakalo yomngundo: ukubonakala komngundo kufuneka kuqinisekiswe ukuba akukho rusi, ukungqubana, ukungaphelelanga kunye nezinye iziphene zemodyuli
Ukuthuthwa komngundo: ukuthuthwa kwesikhunta kufuneka kulayishwe iphepha lokutshixa ukungunda, upakisho lomelele kwaye lube nomhlwa.

Uyilo lomsebenzi onamandla, olulula nolusebenzayo, imveliso yobomi bexesha elide yenziwa kakuhle, intle kwaye yomelele, akukho lula ukuyonakalisa.
Inkqubo yokubumba okuphezulu kwesipili kunye nenkqubo yokubumba inaliti ngentsebenziswano esondeleyo, ukuze umphezulu wemveliso ufezekise ubume bendalo kunye nobokwenene.