Bells of New Spain: the large bronze casting and the founders who already cast metal
A Franciscan chronicle records bell-founding as one of the first European trades indigenous craftsmen took over completely — the proportions of waist, crown and lip, the alloy, and bells "chicas y grandes, muy limpias y de buena voz y sonido". Archaeology has since shown they were not beginners at casting: copper bells were being made in Mesoamerica by remelting, open-mould and lost-wax work centuries before. What was new was the scale, the alloy and the tuning.
Why this wins its question: Bell-founding in colonial Mexico is normally met either as a line of mission romance — the friars taught the Indians to cast bells — or as a heritage-inventory note about a particular tower. Neither quotes the sixteenth-century sentence, and neither asks the obvious question about it. This object prints Mendieta's sentence in full, shows that Torquemada's apparent corroboration is the same text reprinted and therefore worthless as confirmation, and then puts against the friars' word "ignoraban" the peer-reviewed evidence that copper bells were being cast in Mesoamerica by remelting, open-mould and lost-wax methods centuries earlier — 482 of them recovered from a single site, with the crucibles and the blowpipe tips. The result is a smaller and better claim than the usual one: what crossed the Atlantic was not casting but the large bronze bell, its proportions and its tuning.
Claims
Every assertion below is bound to registered sources and carries its own confidence. Weight them; do not treat the page as uniformly authoritative.
Mendieta's chapter on the trades names bell-founding first among the crafts indigenous workmen mastered outright, and the praise is technical rather than general: "Uno de los oficios que primeramente sacaron con mucha perfeccion fué el hacer campanas, así en las medidas y grueso que la campana requiere en las asas y en el medio, como en el borde, y en la mezcla del metal, segun el oficio lo demanda. Y así fundieron luego muchas campanas, chicas y grandes, muy limpias y de buena voz y sonido." Three separate things are being credited — the proportions at crown, waist and lip, the composition of the alloy, and the resulting tone — and they are the three things a bell-founder is judged on.
The apparent second witness is not one. Torquemada's libro XVII carries the same sentence in almost identical words — "fue el hacer Campanas, así en las medidas, y grueso, que la Campana requiere en las Asas, y en el medio, como en el Bordo, y en la Mezcla de el Metal, segun el Oficio lo demanda; y así fundieron luego muchas Campanas, chicas, y grandes, mui limpias, y de buena voz, y sonido" — differing only in spelling and in "harta" for "mucha" perfección. It is the same tradition printed twice, not independent confirmation, and this object treats the claim as resting on one Franciscan source.
The friars' framing — a trade the Indians "ignoraban" until Europeans brought it — is not what the archaeology shows about metal casting in Mesoamerica. A 2020 study of metalworking debris at Mayapán in Yucatán reports that metallurgy began "in West Mexico by around AD 600" and that local metalworking communities emerged in the Postclassic wherever metal was available; copper bells were the dominant artefact class at the site, 482 of 559 metal items recovered, and "the identification of miscast copper bells, crucibles filled with casting debris, and metallurgical ceramics strongly support the presence of a local metalworking industry". The techniques the study describes for that industry are "remelting, open-mold, and lost-wax casting", and it identifies two ceramic blowpipe tips which are, "to our knowledge... the first archaeologically documented tuyères for pre-Hispanic Mesoamerica".
Set side by side, the two bodies of evidence say something narrower and more interesting than either alone. Casting was not the novelty; the sixteenth-century transfer was of a different object — a large bronze bell rather than a small copper one — and of the things Mendieta's sentence actually lists: the proportional scheme that governs a bell's wall thickness at each point, the bronze alloy, and the tuned voice that follows from both. That indigenous founders took those over quickly is more plausible, not less, once it is known that furnaces, crucibles, blowpipes and lost-wax moulds were already part of the working repertoire in Mesoamerica.
What none of this establishes. Neither chronicle names a founder, a foundry, a town, a date or a surviving bell, and neither says whether the men who cast them were paid; the passage sits inside a chapter arguing the aptitude of indigenous converts, written by a member of the order that taught them. The archaeological study is about Postclassic Yucatán, says nothing about the colonial period, and cannot speak to who cast bells after 1521. No colonial bell has been metallurgically analysed in any source read here, and no claim is made about the earliest datable bell cast in the Americas — only that a sixteenth-century chronicle records indigenous founders producing bells of both sizes, in tune, early enough for its author to call the craft one of the first they took over.