Nthawi zambiri amagwiritsidwa ntchito m'misewu yayikulu, ma tunnel, milatho, mizere yamabasi akutawuni, mabwalo osiyanasiyana, modutsa, milatho ya oyenda pansi, misewu yowoneka bwino ya njinga, misewu yam'deralo ndi malo oimika magalimoto, ndi zina zambiri.
Panjira zamitundumitundu zosatsetsereka
(2) Tsukani fumbi ndi zopinga;
(3) Zodzaza zoyenerera zingagwiritsidwe ntchito kukonza maenje akuya kapena mabowo ang'onoang'ono (wopanda kanthu) pamsewu;
(4) Gwiritsani ntchito zoyeretsera zoyenera kuyeretsa mafuta amsewu kapena dothi, kenaka muzitsuka ndi madzi, ndikudikirira kuti ziume zonse zisanamangidwe;
(5) Asanamangidwe, ziyenera kutsimikiziridwa kuti msewuwo ndi wouma. Msewu wonyowa ukhoza kuumitsidwa ndi makina otenthetsera mpweya. Makamaka m'nyengo yozizira, msewu uyenera kutenthedwa ndipo utomoni wa resin uyenera kufulumizitsidwa;
(6) Pamalo omangamanga, sindikizani m'mphepete mwake ndi pepala lomatira la kraft kapena tepi, ndiyeno muyese malo omangapo kuti muwerenge kuchuluka kwa zomangamanga za utomoni;
(7) Kutentha kwabwino komanga kwa msewu ndi pakati pa 15-35â.
