Ana amfani da foda na PTFE tare da babban aiki don turawa (matsi) cikin bututu, ana bi da saman ta hanyar sinadarai, sa'an nan kuma an sanya shi cikin bututun ƙarfe mara nauyi (diamita na waje na layin ya fi girma fiye da diamita na ciki na bututun ƙarfe 1.5). -2mm) don samar da layin da ba shi da kyau.Don kawar da damuwa, an sanya shi a cikin tanderun wuta kuma an yi zafi zuwa digiri 180 don maganin zafin jiki na yau da kullum, don haka ya dace don amfani da yanayin zafi a ƙasa da digiri 180. A lokaci guda, axial. Ƙarfin ƙarfin turawa (matsi) tabbas ya fi na bututun iska, wanda za'a iya amfani dashi a cikin bututun matsa lamba mara kyau.