Matanda matema (black poles) zvinoreva mufananidzo wedanda remwenje remumugwagwa risina kunyatsogadziriswa. Icho chimiro chakaumbwa netsvimbo chakatanga kuumbwa kuburikidza neimwe nzira yekuumba, sekukanda, extrusion kana kukunguruka, iyo inopa hwaro hwekuzocheka kunotevera, kudhirowa, kurapwa kwepamusoro, uye mamwe maitiro.
Pamatanda matema esimbi, kukunguruka inzira yakajairika. Nekudzokorodza kakawanda billet yesimbi muguyo rinoputika, chimiro chayo uye ukuru zvinoshandurwa zvishoma nezvishoma, uye pakupedzisira chimiro chemugwagwa wechiedza chemugwagwa chinoumbwa. Rolling inogona kuburitsa danda muviri nemhando yakagadzikana uye yakakwira simba, uye kugona kwekugadzira kwakakwira.
Kureba kwematanda matema kune zvakasiyana-siyana zvinoenderana nemamiriro ekushandisa kwavo. Kazhinji kutaura, kureba kwemapango emwenje emumugwagwa padivi pemigwagwa yemudhorobha kunosvika 5-12 metres. Uhu hurefu hunogona kunyatsovhenekera mugwagwa uchidzivirira kukanganisa zvivakwa zvakatenderedza uye mota. Mune dzimwe nzvimbo dzakavhurika dzakadai semakwere kana nzvimbo huru dzekupaka, kureba kwematanda emwenje emugwagwa kunogona kusvika 15-20 metres kuti ipe mwenje wakafararira.
Tichacheka nekuboora maburi padanda risina chinhu zvichienderana nenzvimbo uye nhamba yemarambi achaiswa. Semuenzaniso, cheka panzvimbo iyo mwenje unoiswa pamusoro pemuviri wepango kuti uone kuti nzvimbo yekuisa mwenje yakadzikama; chera maburi padivi pedanda rekuisa zvikamu zvakaita semagonhi ekupinda nemabhokisi emagetsi ejunction.