Two ways of preparing the two parts to be assembled by flow fusion welding as witnessed on various antique large bronzes. Left side: the base metal is cut away to half its thickness to make a channel through which the molten bronze can run; right side: a space is left between the two parts to be joined and the welding metal is directly poured through this space. See Azéma, A., Benoît Mille, Patrick Echegut, and Domingos de Sousa Meneses. 2011. “An Experimental Study of the Welding Techniques Used on Large Greek and Roman Bronze Statues.” Historical Metallurgy 45:71–80..