Isifudumezi seTubula luhlobo lwento yokufudumala yombane eneziphelo ezimbini ezidibeneyo. Ngokuqhelekileyo ikhuselwe ityhubhu yesinyithi njengeqokobhe langaphandle, elizaliswe ngomgangatho ophezulu wombane wokufudumeza i-alloy resistance wire kunye ne-magnesium oxide powder ngaphakathi. Umoya ongaphakathi kumbhobho ukhutshwa ngomatshini wokunciphisa ukuze kuqinisekiswe ukuba ucingo lokumelana luhlala lulodwa emoyeni, kwaye indawo ephakathi ayitshintshi okanye ithinte udonga lombhobho. Iityhubhu zokufudumeza ezipheliswe kabini zineempawu zesakhiwo esilula, amandla aphezulu omatshini, isantya sokufudumeza ngokukhawuleza, ukhuseleko kunye nokuthembeka, ukufakwa lula, kunye nobomi benkonzo ende.