DIY Hammers & Anvils: Steel Selection, Forging & Heat Treatment
自制锻锤与铁砧：选钢、锻打与热处理
标签：自制工具, 锤头, 砧座, 淬火回火
锤头用 1045（45 钢）或 4140 锻打：1045 加热 1050–1100℃ 冲孔锻方，820–850℃ 水淬、200–300℃ 回火后硬度 HRC 50–55，适合横锤与直锤；4140 油淬更防裂。锤柄选山胡桃或白蜡木，楔紧后浸亚麻油。铁砧可用轨道钢或叉车货叉改制，砧面堆焊 4140 后淬硬至 HRC 55 以上，钢球自 250 mm 落下回弹 ≥70% 方为合格。ABANA 社区流传的 Brian Brazeal 锤型图纸是自制入门的经典蓝本，先做 1.2 kg 圆头锤练手。
Hammer heads start from 1045 or 4140: forge 1045 at 1050–1100°C, punch and square it, water-quench from 820–850°C and temper 200–300°C for HRC 50–55 — good for cross- and straight-peens; 4140 oil-quenches with less cracking. Handles are hickory or ash, wedged and oiled with linseed. Anvils adapt from rail steel or forklift tines: build up the face with 4140 weld, harden above HRC 55, and pass a ball-drop rebound test of 70% from 250 mm. Brian Brazeal's hammer drawings, circulated through the ABANA community, are the classic DIY blueprint — start with a 1.2 kg rounding hammer.