Spain · Blade craft; Quality testing; Toledo heritage — Supplement
Prueba de la Hoja Toledana — Doblar y Recuperar
The final quality test of the Toledo blade — the doblar y recuperar (bend and recover) test that has been the definitive proof of a Toledo sword since the 16th century. A correctly tempered Toledo blade is bent to 90 degrees from vertical (doubled against itself) and then released — it must spring back to perfect straight within 2 seconds without permanent deformation. This test demonstrates the differential hardening (hamon technique — CRAFT-1010 cross-reference) has been correctly applied: the spine is tough and elastic (absorbing the bend) while the edge is hard (maintaining its sharpness through the bend). The test was codified by the Spanish crown as proof of blade quality for military purchase.
Risk level: Stable · Not listed; Toledo espadería included in Spanish Intangible Heritage inventory
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