ɪnðə kˈeɪs ʌv ˈɪŋɡəts, mˈoʊltən lˈɪkwɪd kæn fˈɔːɹm ˌɔn ɪts sˈɜːfɪs, wˌɪtʃ kæn biː kˈɛpt kˈɑːnstənt baɪ vˈɜːɾɪkəl dɪsplˈeɪsmənt ʌvðɪ ˈɪŋɡət.
In the case of ingots, molten liquid can form on its surface, which can be kept constant by vertical displacement of the ingot.