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Marking Knife: One Piece of Tool Steel, Skewed Single Bevel
A marking knife cuts a fine line across the grain, held like a pencil against a straightedge or square. The simplest is one piece of tool steel with a skewed end bevelled on one side only, like the Japanese shirabiki; the flat side runs against the square. Forge the strip, grind the skew, harden and hone.
The picture: a shirabiki, a one-piece marking knife with a skewed single-bevel end.
初学者
Half a day
说明
1
1
Forge the strip
Forge the strip
Draw tool steel to a flat strip about 16 mm wide, 3 mm thick and 18 cm long (our size). Straighten it and file both faces flat.
此步骤所需材料：
工具钢扁钢1 个
木炭1 as required所需工具：
铁匠炉
铁砧
横向楔头锤
铁匠钳
金属锉
台虎钳2
2
Grind the skew
Grind the skew
Grind the end square across, then at a skew of about 40° (ours), and grind a bevel on one face only. Bevel on the right face for a right-handed knife, on the left for a left-handed one.
所需工具：
旋转磨石3
3
Harden and temper
Harden and temper
Heat the end to cherry red, quench in water, polish, and temper to a straw colour.
此步骤所需材料：
水10 升所需工具：
铁匠炉
淬火水桶铁匠钳4
4
Hone
Hone
Hone the bevel, then lap the flat side dead flat on the stone so it runs true against the square.
所需工具：
1000 目磨刀石5
5
The skew
The skew
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