Kambobi masu amfani: jan ƙarfe, aluminium, nailan. Matasa Taya Tasirin Tasiri: 1. Rike bututun tagulla a cikin hanyar haɗin kai kuma mika zuwa ƙasa, dunƙule a kan bututun mai ya dace. Jin abin hawa zuwa ƙasa sannan a sauƙaƙe ɗaukar juzu'i ɗaya. Bayan haɗin, hatimin ya ƙazantu ta hanyar wucewa, shrinkage, kulle bututun ƙarfe na jan ƙarfe na iya zama.
