Ko e ha ʻa e mafana ʻo e ʻOsikena

ʻE lava ʻe ha foʻi ama oxy ʻo ʻomi ha mafana ʻo e ʻea ʻi he vahaʻa ʻo e 3100 mo e 3150 ° c.

ʻOku fakaʻaongaʻi ʻa e fuʻu vela lahi ko ʻeni ke ava ʻi he ukamea ʻo fakaʻaongaʻi ha ulo mei ha oxy-acetylene blowpipe.