Kwishishini lokupakisha ngesinyithi, ngakumbi kummandla wezinto zealuminium kunye nealuminium alloy, inkqubo yentamo ibalulekile ekwenzeni izikhongozeli ezihlangabezana noyilo oluthile kunye neemfuno zomsebenzi. Umatshini wentamo ye-aluminium yesikhongozeli sisixhobo esibalulekileyo esiguqula indawo yentamo yezikhongozeli zealuminium, ukuvumela ukuba itywinwe ngokufanelekileyo ngelixa kubonelela nge-aestheti