ɛkspˌɛɹɪmˈɛntəli tˈɔɪd wɪð ɪn bˈoʊθ klˈeɪ ænd blˈɑːks ʌv wˈæks baɪ dʒˈɜːmən ˈænɪmˌeɪɾɚɹ ˈɑːskɑːɹ fˈɪskɪŋɡɚ ænd hɪz ɐsˈoʊsɪˌeɪt wˈɔltɚ ɹˈʌtmən dˈʊɹɹɪŋ ðə nˈaɪntiːnhˈʌndɹɪd twˈɛnti z ænd nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi z, ɐ kɹˈuːd fˈɔːɹm ɪz spəsˈɪfɪkli fˈaʊnd ɪnðə lˈɑːt ɹˌiːɪnˈaɪdʒɚ fˈɪlm "pɹˈɪns ɐtʃəmd".
Experimentally toyed with in both clay and blocks of wax by German animator Oskar Fischinger and his associate Walter Rutmann during the 1920s and 1930s, a crude form is specifically found in the Lotte Reiniger film "Prince Achmed".