Ubuso bomnyango womlilo kufanele busheleleke futhi buhlanzeke, ngaphandle kwama-dents asobala noma ukulimala komshini. I-welding yomnyango womlilo wensimbi kufanele iqine, amalunga e-solder kufanele asatshalaliswe ngokulinganayo, futhi akufanele kube khona ukushisela okungamanga, ukushiswa, ukuvuza kwe-welding, njll. I-seam kufanele iqine futhi ibushelelezi, futhi i-plywood akufanele kuhlelwe ngokusebenzisa i-surface veneer.