Watch a smith long enough and a pattern emerges: hammer, hammer, hammer, then into the fire, then hammering again. That fire break is annealing, and it's the hidden half of all handwork.
The mechanics: hammering pushes atoms into crowded, stressed arrangements — the metal grows hard but brittle, work-hardened. Continue forcing it and it splits. Heating to a dull red lets atoms shuffle back into relaxed positions, restoring softness. Cool, resume shaping.
Traditional smiths judge annealing temperature by eye, reading flame colours as the metal heats — a skill our craft-process series covers elsewhere in detail. Too cool accomplishes nothing; overheating scars the surface. The eye knows.
For buyers, annealing knowledge explains something practical: why genuinely hand-raised vessels survive decades of thermal cycling without cracking. Each annealing pass left the metal's internal structure saner than machinery often bothers to achieve. The old cycles weren't ritual — they were metallurgy performed by arm and eye.
Smith heating a brass sheet to dull red mid-annealing over coals.