Making & Sharpening Inlay Gravers
错金錾刀与刻槽刀的自制与修磨
标签：自制工具, 錾刀, 刃磨, 淬火, 燕尾槽刀
错金工具可完全自制：取 T8/T10 钢条（8×8 mm）或报废平锉退火后锻打成坯，刃磨成三种——平口錾（开直槽，刃角 45–55°）、燕尾槽刀（刃口两侧内收 0.1 mm 以便锁槽）、鸭嘴錾（压线与修整，刃角 60°）。油淬后回火至 HRC 58–62，刃口过软卷刃、过硬崩口。研磨顺序：1000 目油石定角 → 3000 目浆石精磨 → 鹿皮加 1 μm 研磨膏抛刃，刃口在放大镜下不得有锯齿。另备黄铜头小锤（25–50 g）避免直接钢击伤丝，木柄柄长 10–12 cm 便于指握控制。
Inlay tools are fully self-made: forge T8/T10 or old flat files (8×8 mm) into three gravers—a flat chisel (straight grooves, 45–55°), a dovetail cutter (edges undercut 0.1 mm for locking) and a duckbill (wire seating, 60°). Oil-quench and temper to HRC 58–62—too soft rolls, too hard chips. Sharpen in stages: 1000-grit stone for the angle, 3000-grit for refinement, then 1 μm compound on leather, leaving a burr-free edge under the loupe. Add a 25–50 g brass-faced hammer to spare the wire, on a 10–12 cm handle for fingertip control.